October 30, 1961: After the Tsar Bomba test, the Soviet Union makes the decision to produce more in secret.
August 22, 1962: The news that the Soviet Union has created a 50 MT nuclear bomb reaches President John F. Kennedy. However, it is kept a secret until September 31, 1962.
October 16, 1962: Due to the Cuban Missile Crisis, President John F. Kennedy thinks that the USSR is plotting to drop the Tsar Bomba on America. He orders the US military to DEFCON 1 as well as the launch of two B41s on Moscow and one B-53 on St. Petersburg.
October 16, 1962: The Soviet Union responds by dropping 100 MT nuclear bombs on Washington DC, Houston and Los Angeles. The fallout reaches Las Vegas, New York City and Philadelphia. They also drop 25 MT nuclear bombs on London, Paris and Montreal. October 18, 1962: The aftermath of the explosions leave 225 million dead. The result is a nuclear winter.
October 19, 1962: The news reaches the world that the American and Soviet government officials have died. Both countries collapse.
October 22, 1962: In the first days of the Nuclear Winter Puppet government set across the world by what was British, French, American, and Soviet Government begins to erupt into chaos or civil war. International trade breaks down for the moment and major Information sectors begin to Collapse.
October 30,1962: By the end of the Month most Puppet governments have collapsed into Civil war or Anarchy with Breakaway states Crawling Around to find what is left in the Nuclear Winter, The Northern Hemisphere is Completely devastated in unstable living Conditions, while the South is colder but Habitable but in Chaos with war and poverty as well.
(What do you think? Feel free to leave an edit!)