Pacific War (Atlantic Iron Curtain)

This war was between the British Commonwealth (what was left of it)/The USA (under General Eisenhower)/The Soviet Union/The Republic of China and the Japanese Empire.

A Day that will live in Infamy
On September 11 1940, in response to FDR's oil sanctions, Admiral Yamamoto authorizes a plan to attack Hawaii. However, the USA intercepted the transmission and were waiting for the Japanese strike force.

Soviet Union rejoins the war
Zhukov was told by Roosevelt that the terms for Lend Lease (including help for the Tunguska Project)had changed. Basically Russia had to rejoin the Pacific war. Zhukov readily agreed because Battle of Kalkhin Gol he wanted to settle an old score with Japan.