Maybe context is the wrong word.

E: how about catalyst.

Russia really should just leave Ukraine, though. (Sorry, I just saw the context for this a few minutes ago and can’t help myself).

We enter parliament in order to supply ourselves, in the arsenal of democracy, with its own weapons. If democracy is so stupid as to give us free tickets and salaries for this bear’s work, that is its affair. We do not come as friends, nor even as neutrals. We come as enemies. As the wolf bursts into the flock, so we come.

Joseph Goebbels