I think it is a very bad idea of the New to go to occupy large parts of northern Syria. Obviously those have mostly kurdish people. The risk of revolt in eastern Turkey (also with large kurdish populations) is rather obvious. Re Churchill in ww2: he obviously didn't force Greece into the war. Greece would have remained neutral if Italy didn't invade (and do other stuff prior to that, like sinking a warship to get war declared on it). But Churchill did play a part in the ridiculously failed Dardanelles ww1 campaign, which ultimately was significant for what came afterwards.