On this day in 1920, Hungary lost 71% of its territory and 63% of its population when the Treaty of Trianon was signed in Paris
On this day in 1942, the Battle of Midway began.
On this day in 1961, Soviet premier Nikita Khrushchev sparked the Berlin Crisis by threatening to sign a separate peace treaty with East Germany and ending American, British and French access to East Berlin.
On this day in 1989, The Tiananmen Square protests were violently ended in Beijing by the People's Liberation Army, with at least 241 dead.