Diplomacy
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Please help with verifying or updating older sections of this article. At least some were last verified for version 1.0.
This article is for the PC version of Stellaris only.
This article is for the PC version of Stellaris only.
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Please help improve this article or section by expanding it with: info on attitude variations/behaviour, threat level. |
Diplomacy in Stellaris draws on the model of previous Paradox games. Each AI nation has an opinion and relation values which are increased by friendly actions, diplomatic agreements, and agreeable ethos - and decreased by hostile behaviour and incompatible ethos. The tone adopted at first contact with a new alien species is particularly important in determining starting relations.
The basic diplomatic actions are as follows:
Declaring war
- Wars are governed by a war goals / war score system. When declaring war a nation selects war goals which they are trying to achieve. (If attacking as part of an alliance, the whole alliance has to agree the goals, including who gets which planets in the event of victory). Success in space combat and occupying or blockading enemy worlds increases your war score and the higher your war score and the worse your enemy's assessment of their own position, the more you can demand in a peace treaty. Naturally, if you force a harsh peace settlement on your opponent, you will make other nations around you feel threatened and worsening their opinions.
Offering an alliance
- A strong alliance with 4 or more participants may become a
Federation
- A strong alliance with 4 or more participants may become a
Demand vassalization
Ask to be their vassal
Offer a trade agreement.
Establishing an embassy to improve relations with an AI nation for +1 per month and up to +100, embassy juggling has no penalty or timeout, relationship bonus will just slowly erode. Default maximum number of embassies is 3.
Declaring rivalry - Instant and permanent -100 opinion and monthly bonus to 
influence, which depends on distance (bordering neighbours grant +1), until rivalry is lifted, unless opponent rivalled you back.
- +25 opinion from nations with mutual rival.
- Rivalries cannot be lifted for 10 years and maximum of them is 3.
- Sending an insult to temporarily reduce relations (instant -100 opinion, rebounds with +2 per month)
In most circumstances, the AI's diplomacy - both in response to the player's offers, and the actions the AI initiates - is determined by the AI nation's relations with the player nations, the AI nation's own ethics, and also by the threat level the AI perceives from the player and from other AI nations. Some actions also depend on AI personality.
Opinion modifying option have no effect in a multiplayer game in relation to human players.
Opinion modifiers
Here is the full list of opinion modifiers that exist in the game, their triggering conditions, decay and limits.
| Name | Value | Decay | Limit |
|---|---|---|---|
| At War | -50 | ||
| Alliance | 50 | ||
| Federation | 50 | ||
| Same Overlord | 25 | ||
| Subject | 25 | ||
| Non-Aggression Pact | 25 x0 IF is a fallen empire |
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| Supports Independence | 50 x0 IF is a fallen empire |
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| Guarantees Independence | 25 x0 IF is a fallen empire |
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| Grants Military Access | 5 x0 IF is a fallen empire |
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| Grants Civilian Access | 5 x0 IF is a fallen empire |
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| Grants Construction Access | 5 x0 IF is a fallen empire |
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| Migration Treaty | 10 x0 IF is a fallen empire |
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| Research Treaty | 10 x0 IF is a fallen empire |
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| Trade | 5 | ||
| Repugnant | 0 -15 IF Your Empire has trait: Repugnant -5 IF has trait: Repugnant |
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| Charismatic | 0 15 IF Your Empire has trait: Charismatic |
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| Interference Policy | 0 -5 IF has ethic:  Xenophobe AND Your Empire has policy: Passive Study-10 IF has ethic:  Fanatic Xenophobe AND Your Empire has policy: Passive Study10 IF has policy: Passive Study AND Your Empire has policy: Passive Study |
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| Slavery Policy | 0 -10 IF has ethic:  Individualist AND Your Empire {has policy: Xeno-Slavery Only OR has policy: Slavery Allowed}-20 IF has ethic:  Fanatic Individualist AND Your Empire {has policy: Xeno-Slavery Only OR has policy: Slavery Allowed}10 IF has policy: Slavery Allowed AND Your Empire has policy: Slavery Allowed -5 IF has ethic:  Xenophile AND NOT{has AI personality: Enigmatic Observers} AND NOT{has trait: Decadent} AND Your Empire {has policy: Xeno-Slavery Only OR has policy: Slavery Allowed}-10 IF has ethic:  Fanatic Xenophile AND NOT{has AI personality: Enigmatic Observers} AND NOT{has trait: Decadent} AND Your Empire {has policy: Xeno-Slavery Only OR has policy: Slavery Allowed}-10 IF has AI personality: Enigmatic Observers AND Your Empire {has policy: Xeno-Slavery Only OR has policy: Slavery Allowed} |
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| Purge Policy | 0 -10 IF NOT{has AI behavior: purger} AND Your Empire {has policy: Xeno-Purge Only OR has policy: Purging Allowed} -10 IF has ethic: Individualist AND Your Empire {has policy: Xeno-Purge Only OR has policy: Purging Allowed}-20 IF has ethic: Fanatic Individualist AND Your Empire {has policy: Xeno-Purge Only OR has policy: Purging Allowed}-10 IF has ethic: Xenophile AND NOT{has AI personality: Enigmatic Observers} AND Your Empire {has policy: Xeno-Purge Only OR has policy: Purging Allowed}-20 IF has ethic: Fanatic Xenophile AND NOT{has AI personality: Enigmatic Observers} AND Your Empire {has policy: Purging Allowed OR has policy: Xeno-Purge Only}-20 IF has AI personality: Enigmatic Observers AND Your Empire {has policy: Purging Allowed OR has policy: Xeno-Purge Only} |
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| Bombardment Policy | 0 -5 IF has ethic:  Pacifist AND Your Empire has policy: Limited-10 IF has ethic:  Fanatic Pacifist AND Your Empire has policy: Limited-10 IF has ethic: Pacifist AND Your Empire has policy: Full-20 IF has ethic: Fanatic Pacifist AND Your Empire has policy: Full
|
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| Voting Rights Policy | 0 10 IF has policy: Universal Suffrage AND Your Empire has policy: Universal Suffrage -10 IF has policy: Universal Suffrage AND Your Empire has policy: No Voting -10 IF has policy: No Voting AND Your Empire has policy: Universal Suffrage |
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| Leadership Policy | 0 -10 IF has ethic:  Spiritualist AND NOT{has policy: Synthetic Leaders Allowed OR has policy: All Leader Types Allowed} AND Your Empire {has policy: Synthetic Leaders Allowed OR has policy: All Leader Types Allowed}-20 IF has ethic:  Fanatic Spiritualist AND NOT{has policy: Synthetic Leaders Allowed OR has policy: All Leader Types Allowed} AND Your Empire {has policy: Synthetic Leaders Allowed OR has policy: All Leader Types Allowed}
|
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| First Contact Hostilities | -10 | ||
| First Contact War | -25 | ||
| Xenophobic Bigots | 0 -10 IF {has ethic: Xenophile OR has ethic: Fanatic Xenophile} AND Your Empire has ethic: Xenophobe AND NOT{is in the same phenotype as: Your Empire }-5 IF {has ethic: Xenophile OR has ethic: Fanatic Xenophile} AND Your Empire has ethic: Xenophobe AND is in the same phenotype as: Your Empire AND NOT{is the same species as: Your Empire } AND NOT{is subspecies of: Your Empire }-10 IF NOT{has ethic: Fanatic Xenophobe} AND NOT{has ethic: Xenophobe} AND Your Empire has ethic: Xenophobe AND NOT{is in the same phenotype as: Your Empire }-5 IF NOT{has ethic: Fanatic Xenophobe} AND NOT{has ethic: Xenophobe} AND Your Empire has ethic: Xenophobe AND is in the same phenotype as: Your Empire AND NOT{is the same species as: Your Empire } AND NOT{is subspecies of: Your Empire }-20 IF {has ethic: Xenophile OR has ethic: Fanatic Xenophile} AND Your Empire has ethic: Fanatic Xenophobe AND NOT{is in the same phenotype as: Your Empire }-10 IF {has ethic: Xenophile OR has ethic: Fanatic Xenophile} AND Your Empire has ethic: Fanatic Xenophobe AND is in the same phenotype as: Your Empire AND NOT{is the same species as: Your Empire } AND NOT{is subspecies of: Your Empire }-20 IF NOT{has ethic: Fanatic Xenophobe} AND NOT{has ethic: Xenophobe} AND Your Empire has ethic: Fanatic Xenophobe AND NOT{is in the same phenotype as: Your Empire }-10 IF NOT{has ethic: Fanatic Xenophobe} AND NOT{has ethic: Xenophobe} AND Your Empire has ethic: Fanatic Xenophobe AND is in the same phenotype as: Your Empire AND NOT{is the same species as: Your Empire } AND NOT{is subspecies of: Your Empire }
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| Xenophile Diplomacy | 0 10 IF NOT{has ethic: Xenophile AND has ethic: Fanatic Xenophile AND has ethic: Xenophobe AND has ethic: Fanatic Xenophobe} AND Your Empire has ethic: Xenophile AND NOT{is in the same phenotype as: Your Empire }20 IF NOT{has ethic: Xenophile AND has ethic: Fanatic Xenophile AND has ethic: Xenophobe AND has ethic: Fanatic Xenophobe} AND Your Empire has ethic: Fanatic Xenophile AND NOT{is in the same phenotype as: Your Empire }10 IF has ethic: Xenophile AND Your Empire {has ethic: Xenophile OR has ethic: Fanatic Xenophile}10 IF has ethic: Fanatic Xenophile AND Your Empire has ethic: Xenophile20 IF has ethic: Fanatic Xenophile AND Your Empire has ethic: Fanatic Xenophile
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| Xenophobia | 0 -20 IF has ethic: Xenophobe AND NOT{is in the same phenotype as: Your Empire }-10 IF has ethic: Xenophobe AND is in the same phenotype as: Your Empire AND NOT{is the same species as: Your Empire } AND NOT{is subspecies of: Your Empire }-5 IF has ethic: Xenophobe AND is in the same phenotype as: Your Empire AND NOT{is the same species as: Your Empire } AND is subspecies of: Your Empire -40 IF has ethic: Fanatic Xenophobe AND NOT{is in the same phenotype as: Your Empire }-20 IF has ethic: Fanatic Xenophobe AND is in the same phenotype as: Your Empire AND NOT{is the same species as: Your Empire } AND NOT{is subspecies of: Your Empire }-10 IF has ethic: Fanatic Xenophobe AND is in the same phenotype as: Your Empire AND NOT{is the same species as: Your Empire } AND is subspecies of: Your Empire
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| Xenophilia | 0 20 IF has ethic: Xenophile AND NOT{is in the same phenotype as: Your Empire }10 IF has ethic: Xenophile AND is in the same phenotype as: Your Empire AND NOT{is the same species as: Your Empire } AND NOT{is subspecies of: Your Empire }5 IF has ethic: Xenophile AND is in the same phenotype as: Your Empire AND NOT{is the same species as: Your Empire } AND is subspecies of: Your Empire 40 IF has ethic: Fanatic Xenophile AND NOT{is in the same phenotype as: Your Empire }20 IF has ethic: Fanatic Xenophile AND is in the same phenotype as: Your Empire AND NOT{is the same species as: Your Empire } AND NOT{is subspecies of: Your Empire }10 IF has ethic: Fanatic Xenophile AND is in the same phenotype as: Your Empire AND NOT{is the same species as: Your Empire } AND is subspecies of: Your Empire
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| Materialist Fools | 0 -10 IF has ethic: Spiritualist AND Your Empire has ethic:  Materialist-20 IF has ethic: Spiritualist AND Your Empire has ethic:  Fanatic Materialist-20 IF has ethic: Fanatic Spiritualist AND Your Empire has ethic: Materialist-40 IF has ethic: Fanatic Spiritualist AND Your Empire has ethic: Fanatic Materialist
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| Bright Materialists | 0 25 IF has ethic: Fanatic Materialist AND Your Empire has ethic: Fanatic Materialist10 IF has ethic: Fanatic Materialist AND Your Empire has ethic: Materialist10 IF has ethic: Materialist AND Your Empire has ethic: Fanatic Materialist10 IF has ethic: Materialist AND Your Empire has ethic: Materialist
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| Spiritualist Fools | 0 -10 IF has ethic: Materialist AND Your Empire has ethic: Spiritualist-20 IF has ethic: Materialist AND Your Empire has ethic: Fanatic Spiritualist-20 IF has ethic: Fanatic Materialist AND Your Empire has ethic: Spiritualist-40 IF has ethic: Fanatic Materialist AND Your Empire has ethic: Fanatic Spiritualist
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| Wise Spiritualists | 0 25 IF has ethic: Fanatic Spiritualist AND Your Empire has ethic: Fanatic Spiritualist10 IF has ethic: Fanatic Spiritualist AND Your Empire has ethic: Spiritualist10 IF has ethic: Spiritualist AND Your Empire has ethic: Fanatic Spiritualist10 IF has ethic: Spiritualist AND Your Empire has ethic: Spiritualist
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| Individualist Rabble | 0 -10 IF has ethic:  Collectivist AND Your Empire has ethic: Individualist-20 IF has ethic: Collectivist AND Your Empire has ethic: Fanatic Individualist-20 IF has ethic:  Fanatic Collectivist AND Your Empire has ethic: Individualist-40 IF has ethic: Fanatic Collectivist AND Your Empire has ethic: Fanatic Individualist
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| Free Individualists | 0 25 IF has ethic: Fanatic Individualist AND Your Empire has ethic: Fanatic Individualist10 IF has ethic: Fanatic Individualist AND Your Empire has ethic: Individualist10 IF has ethic: Individualist AND Your Empire has ethic: Fanatic Individualist10 IF has ethic: Individualist AND Your Empire has ethic: Individualist
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| Enlightened Pacifists | 0 25 IF has ethic: Fanatic Pacifist AND Your Empire has ethic: Fanatic Pacifist10 IF has ethic: Fanatic Pacifist AND Your Empire has ethic: Pacifist10 IF has ethic: Pacifist AND Your Empire has ethic: Fanatic Pacifist10 IF has ethic: Pacifist AND Your Empire has ethic: Pacifist
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| Collectivist Tyrants | 0 -10 IF has ethic: Individualist AND Your Empire has ethic: Collectivist-20 IF has ethic: Individualist AND Your Empire has ethic: Fanatic Collectivist-20 IF has ethic: Fanatic Individualist AND Your Empire has ethic: Collectivist-40 IF has ethic: Fanatic Individualist AND Your Empire has ethic: Fanatic Collectivist
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| ??? Personality | -1000 IF has AI personality: Metalheads -1000 IF has AI personality: purifier AND NOT{is the same species as: Your Empire } AND NOT{is subspecies of: Your Empire } -50 IF has AI personality: Honorbound AND has ethic: Pacifist-100 IF has AI personality: Honorbound AND has ethic: Fanatic Pacifist25 IF has AI personality: Democratic Crusaders AND Your Empire has election type: democratic -50 IF has AI personality: Democratic Crusaders AND Your Empire has election type: oligarchic -100 IF has AI personality: Democratic Crusaders AND Your Empire has election type: none -100 IF NOT{has AI personality: Democratic Crusaders} AND has AI personality: ideologue AND {and{{has ethic: Individualist OR has ethic: Fanatic Individualist} AND {Your Empire has ethic: Collectivist OR Your Empire has ethic: Fanatic Collectivist}} OR and{{has ethic: Collectivist OR has ethic: Fanatic Collectivist} AND {Your Empire has ethic: Individualist OR Your Empire has ethic: Fanatic Individualist}} OR and{{has ethic: Materialist OR has ethic: Fanatic Materialist} AND {Your Empire has ethic: Spiritualist OR Your Empire has ethic: Fanatic Spiritualist}} OR and{{has ethic: Spiritualist OR has ethic: Fanatic Spiritualist} AND {Your Empire has ethic: Materialist OR Your Empire has ethic: Fanatic Materialist}}}
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| Desecrated Holy Planet | -200 IF has AI personality: Holy Guardians AND Your Empire has any planet has planet modifier: pm_holy_planet | ||
| Desecrated Tomb World | -50 IF has AI personality: Holy Guardians AND Your Empire has any planet of type: Tomb World | ||
| Researching Artificial Intelligence | -10 IF has AI personality: Keepers of Knowledge AND Your Empire NOT{has policy: Outlawed} AND Your Empire has technology: Robotic Workers -20 IF has AI personality: Keepers of Knowledge AND Your Empire NOT{has policy: Outlawed} AND Your Empire has technology: Droids -70 IF has AI personality: Keepers of Knowledge AND Your Empire NOT{has policy: Outlawed} AND Your Empire has technology: Synthetics -10 IF has AI personality: Keepers of Knowledge AND Your Empire NOT{has policy: Outlawed} AND Your Empire has technology: Administrative AI -20 IF has AI personality: Keepers of Knowledge AND Your Empire NOT{has policy: Outlawed} AND Your Empire has technology: Self-aware Logic -70 IF has AI personality: Keepers of Knowledge AND Your Empire NOT{has policy: Outlawed} AND Your Empire has technology: Sentient AI |
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| Was at War | -25 | 1 | |
| Genocidal | 0 -5 IF NOT{has AI behavior: purger} AND NOT{is a fallen empire} -5 IF has ethic: Individualist AND NOT{is a fallen empire}-10 IF has ethic: Fanatic Individualist AND NOT{is a fallen empire}-5 IF has ethic: Xenophile AND NOT{is a fallen empire}-10 IF has ethic: Fanatic Xenophile AND NOT{is a fallen empire}-5 IF has AI personality: Enigmatic Observers |
2 | accumulative min: -100 |
| Purged our Species | -25 | 1 | accumulative min: -1000 |
| Slaver | 0 -1 IF has ethic: Individualist AND NOT{is a fallen empire}-2 IF has ethic: Fanatic Individualist AND NOT{is a fallen empire}-1 IF {has ethic: Xenophile OR has ethic: Fanatic Xenophile} AND NOT{is a fallen empire}-1 IF has AI personality: Enigmatic Observers |
2 | accumulative min: -50 |
| Terror Bombing | 0 -5 IF NOT{has ethic:  Militarist} AND NOT{has ethic:  Fanatic Militarist} AND NOT{is a fallen empire}-5 IF has ethic: Pacifist AND NOT{is a fallen empire}-10 IF has ethic: Fanatic Pacifist AND NOT{is a fallen empire}-5 IF has AI personality: Enigmatic Observers |
1 | accumulative min: -100 |
| Changed Federation | -50 | 10 | accumulative |
| Broke Federation | -50 | 10 | accumulative |
| Changed Alliance | -50 | 10 | accumulative |
| Broke Alliance | -40 | 10 | accumulative |
| Accepted plea for protection | 30 | 5 | |
| Ceded planet At war | -30 | 5 | accumulative |
| Forced subject | -30 | 5 | |
| Released from Overlord | 30 | 1 | |
| White peace not acceptable | -20 | 5 | |
| Gift | 20 | 5 | accumulative |
| Demanding Tribute | -20 | 5 | accumulative |
| opinion_was_in_trade | -1 | 2 | min: -100 |
| Broke free from Overlord | -20 | 5 (monthly) | |
| New Contact | -20 | 2 1 IF {has ethic: Xenophile OR has ethic: Fanatic Xenophile}-1 IF {has ethic: Xenophobe OR has ethic: Fanatic Xenophobe}
|
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| Embassy | 1 | accumulative max: 100 min: 0 | |
| Threat | -1 | unique min: -1000 | |
| Relative Power of Subjects | -1 | unique min: -1000 | |
| Border Friction | -1 | unique | |
| Our Rival | -100 | unique | |
| Rivaling Us | -100 | unique | |
| Mutual Rivals | 25 | unique | |
| Mutual Threats | 1 | unique | |
| Allied to Rivals | -25 | unique | |
| Rivals with Allies | -25 | unique | |
| Insulted | -100 | 2 -1 IF is a fallen empire (monthly) |
unique |
| Demanded subjugation | -15 | duration(month): 600 | |
| Declined War | -20 | duration(month): 12 | |
| Inactive at War | -20 | duration(month): 12 | |
| Breakaway State | -100 | 2 | accumulative |
| Former Oppressors | -100 | 2 | accumulative |
| Liberator | 100 | 2 | accumulative |
| Seized Resource Station | -5 x4 IF is a fallen empire |
2 | accumulative |
| $opinion_abandoned$ | -35 | 3 1 IF has ethic: Xenophile2 IF has ethic: Fanatic Xenophile-1 IF has ethic: Xenophobe-2 IF has ethic: Fanatic Xenophobe
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| Abandoned Refugees | -50 | 3 1 IF has ethic: Xenophile2 IF has ethic: Fanatic Xenophile-1 IF has ethic: Xenophobe-2 IF has ethic: Fanatic Xenophobe
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| $opinion_abandoned$ | -75 | 3 1 IF has ethic: Xenophile2 IF has ethic: Fanatic Xenophile-1 IF has ethic: Xenophobe-2 IF has ethic: Fanatic Xenophobe
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| Saved Crew | 25 | 3 1 IF has ethic: Xenophile2 IF has ethic: Fanatic Xenophile-1 IF has ethic: Xenophobe-2 IF has ethic: Fanatic Xenophobe
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unique |
| Desecrated Tomb | -20 | 3 1 IF has ethic: Xenophile2 IF has ethic: Fanatic Xenophile-1 IF has ethic: Xenophobe-2 IF has ethic: Fanatic Xenophobe
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unique |
| $opinion_graverobber_1$ | -35 | 3 1 IF has ethic: Xenophile2 IF has ethic: Fanatic Xenophile-1 IF has ethic: Xenophobe-2 IF has ethic: Fanatic Xenophobe
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unique |
| $opinion_graverobber_1$ | -50 | 4 1 IF has ethic: Xenophile2 IF has ethic: Fanatic Xenophile-1 IF has ethic: Xenophobe-2 IF has ethic: Fanatic Xenophobe
|
unique |
| Literary Savior | 20 | ||
| Book Burner | -20 | ||
| opinion_dead_captives | -10 | ||
| opinion_live_captives | 10 | ||
| Faction Insult | -30 | 5 | |
| Enlightened Us | 50 | 5 | |
| Destroyed Dimensional Portal | 40 | 5 | |
| Extragalactic Invaders | -1000 | ||
| Prey | -1000 | ||
| Hostility Forgiven | 35 | 5 -5 IF has ethic: Militarist-3 IF has ethic: Fanatic Militarist2 IF has ethic: Pacifist4 IF has ethic: Fanatic Pacifist
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unique |
| Annexed Primitives | -25 -15 IF has ethic: Xenophile-25 IF has ethic: Fanatic Xenophile-5 IF has ethic: Pacifist-10 IF has ethic: Fanatic PacifistX0 IF has AI behavior: dominator |
1 | |
| Put in their place | 50 | 5 | max: 50 |
| Accepted Demands | 100 | 5 | max: 100 |
| Refused Demands | -100 | 5 | max: -200 |
References
Game concepts
| Governance | Empire • Ethics • Government • Civics • Policies • Edicts • Leader • Factions • Population • Species rights • Economy • Technology • Traditions • Crime |
| Exploration | Exploration • Map • Species • Anomaly • Events • FTL • Fallen empire • Pre-FTL species • Precursors • Spaceborne aliens |
| Colonization | Colonization • Celestial body • Planetary features • Planetary management • Districts • Buildings • Ship • Starbase • Megastructures |
| Diplomacy | Diplomacy • Trade • Subject empire • Federations • Galactic community • AI personalities |
| Warfare | Warfare • Space warfare • Land warfare • Ship designer |
| Others | Traits • Terraforming • Pop modification • Slavery • Crisis • Preset empires • AI players • Easter eggs |
