WW3

WW3 (or World War 3 or the 10 Years World War) was a war that started in 2nd February 2031 and ended 4th March 2041.

China tries to fully annex Hong Kong (2030-31)
China had had enough with Hong Kong and the protests so they tried to annex Hong Kong fully before 2047. This ticked off Britain, who now was at a boiling point. They warned China they were going to declare war of them if they didn't stop. China didn't take the treat seriously, and attacked the Hong Kong people on a normal day. This cause Britain to declare war.

China and Britain gather allies
Britain gained allies with the US, Japan and France and managed to persuade Australia to be on his side despite what Britain did to the former. China gained allies with Russia, Mongolia and other communist countries. They persuaded North Korea that in 2037 they would help North Korea annex the south, and North Korea jumped onto that opportunity.

China betrays Vietnam (2032)
Vietnam was on China's side, but because China was suspicious of them of being a spy for the USA. China carpet bombed Vietnam, and left most of the country in rubble. Feeling betrayed, Vietnam switched sides. China was pleased with themselves.

China betrays Mongolia (2034)
China needed more land, and so they looked north. They invaded Mongolia, much to Mongolia's dismay. They switched sides, got the help of Vietnam and Japan, and pushed China back.

China dies (2036)
Japan had enough of China and challenged him to a battle of wit and/or words. China accepted and quickly got nukes ready. Japan ordered for people to gather radioactive waste. Japan put the waste into a box, labeled it "From Russia" and sent it. China fell for the trick and the president of China died from radioactive poisoning. China was then over run by the USA, Japan and Taiwan. Hong Kong was officially free.

Korea (2037)
Despite Commie China being dead and replaced with the ROC, North Korea decided to go ahead with Operation: Unify. He invaded the South, but was quickly driven back by the latter and the US. North Korea was squeezed between the ROC and South Korea until he was fully dead.

Russia tries to annex Europe (2033-2041)
Russia wanted to bring back the Soviet Union so he went on an annexing rampage. He annexed most of the old soviet union. Ukraine held their own against Russia with the help of Britain and the USA, Germany was pushing into Poland to free the country and Estonia and Finland were fighting a battle of stealth. They managed to push Russia back. Russia decided to nuke Germany, and he did. However, it didn't stop Germany. They defeated Russia. All of the countries Russia annexed were freed and they split the country.

End
After that, the communist countries surrendered, and the world was at peace...

Until the Slavic Wars, but that's their problem.