It is clearly an advantage to replace Chamberlain with Churchill, but I am not certain how best to achieve that. There is a focus titled "Vote of No Confidence," and I assume that focus step is the way to begin replacing Chamberlain. But is there a timing issue? In other words, is there an ideal time to choose this focus? I expected the focus would require that the UK be at war but apparently not. Is it a good idea to run this focus step as early as possible? I assume the focus will set up some event trigger, but I'm not sure. How should I proceed?