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Your Reputation affects your chances to make diplomatic moves. Your Relations with the other nation are -100 or worse. AI players are limited to 3 non vassal alliances, the player can have an unlimited number If you seek an alliance with another country and it says "impossible", there are several reasons this could be the case. If an ally declares war on another country, you have the option to join the war on their side (without spending a diplomat). When someone declares war on a country in an alliance, the victim's allies can either declare war on the aggressor or end the alliance (without spending a diplomat). In this case, whichever side is turned down (possibly both) will automatically have its alliance ended, and a state of war will exist.
Country A might also come in a situation where they have to choose which side to support in a war. This means that it is perfectly possible for a country A to be allied to countries B and C that are bitter enemies. The alliance system in EU3 is bilateral, which means that all alliances are treaties between two countries. This article is accurate for the latest versions of EU3, Napoleon’s Ambition, In Nomine, Heir to the Throne and Divine Wind.Īn alliance is a formal military agreement in which two nations agree to assist one another in war.