I was invited into a war via a defensive pact and we're losing terribly. The problem is, even if the warscore is below -50%, the main defender has not yet sent their peace terms and I'm stuck fighting the enemy myself. Is there a way to stop my involvement abruptly?
How to leave a war in which you are not the main attacker/defender
stellaris
Best Answer
You can't.
You can minimise losses by keeping your fleet out of the way, but there's not much you can do if the enemy decides to attack your territory or, worse, cede your planets.
In future, you can avoid this by not making defensive pacts that you don't want to have to honour.