According to the Catholic Church, is assassinating politicians ever justifiable under the Natural Law?

I'm listening to [a podcast from Relevant Radio](https://open.spotify.com/episode/5tm0zcjbxgKMe2U1PJtK2s?si=705c13747d0041cd) talking about how many people in the USA think it's OK to assassinate politicians. Wondering what that Natural Law (as interpreted by the Catholic Church) would say about that. Chesterton quipped once that it was distressing to think of how few politicians are hanged these days, but I think he may have said that in jest. Today people seem to take that seriously. Is there any area where assassination is justified? In a war perhaps?