China: at war with Japan, can go to war with Germany/Italy only if they declare war on it(won’t matter much unless they have taken over Russia)
France: At war with Germany/Italy. Can declare war on Japan as it wishes(not much of a point though. The only French unit in the area is the destroyer off Madagascar).
UK/ANZAC: At war with Germany/Italy, can declare war on Japan at any time, but this allows Japan to enter the war without bringing in the US
Japan: At war with China. Can declare war on USSR and France with no consequences. Can declare war on UK/ANZAC/Dutch at will, but if UK/ANZAC didn’t declare war previously, this allows the US to enter the war
Germany: At war with UK, ANZAC, and France. Can declare war on China, USSR, and US at will. War with US will lead to US being able to declare war on the other 2 axis
Italy: Same as Germany
USSR: At war with no one. Can declare war on Japan at any time without affecting others.
Cannot declare war on Germany/Italy unless they declare war 1st or it’s the 4th turn
US: At war with no one until 3rd turn, unless any axis declares war on it, which allows the US to declare war on all axis
Dutch: I assume these can be taken by Germany/Italy without bringing the US in, but this will be rare