What happened to the (United States of?) America to give it so few states? Is there a civil war/rebel occupation going on in the Soviet Union? If yes, how does this not escalate into global thermonuclear war?
How (un)stable is the Middle East, and how is it with the Five Chinas? What is the system of government of North Japan (I presume something like Kimism, maybe Miyamotoism)?
The US was overthrown by a communist revolution in the 30s following a series of unfortunate events. The loss of the US as an ally and trading partner prompted the British Empire to grant more rights to the natives and then federate. The Union of American People's Republics participated in the Pacific War against Japan (see below), then "recruited" most of Latin America into an alliance.
The Soviets allied with the Nazis against the British etc., and eventually accepted a negotiated peace after they got nuked twice, including a clause of no nukes (though they have a small open secret stockpile like OTL Israel). These days they're actually somewhat more liberal than OTL Russia. The Caucasus is in a state of general disarray, with the League of Nations in the process of negotiating a settlement. It's expected to resolve soon (TM).
The Middle East is unlikely to burst into open war - the existence of a Palestinian state removes some excuses, for one, and there haven't been any invasions stirring shit up - but it's still not a great place to live. Iraq and Syria are dictatorships, per OTL before the US invasion and Arab Spring respectively, Lebanon is a Christian fundamentalist Fascist state, but hey, at least there's no ISIL.
The People's Republic of China is basically North Korea writ large, ready to fling nukes at its neighbours at the slightest provocation. They alienated all of their allies in the '70s and since then they've all but walled off their borders. The question is, will they go out with a whimper as their population gradually starves to death, or a bang as they start opening cans of instant sunshine all over the far east?
The People's Republic of Japan is one of two Asian members of the American bloc, along with Korea (which is much closer to OTL Czechoslovakia in governance than our DPRK). It's not unlike East Germany, complete with Tokyo Wall, and is considered one of the more unstable of the communist nations.