1st » George H. W. Bush and Mikhail Gorbachev sign a treaty to end chemical weapon production.
2nd » The Lower Ohio Valley tornado outbreak of June 1990 known as Lower Ohio Valley tornado outbreak spawns 66 confirmed tornadoes in Illinois, Indiana, Kentucky, and Ohio, killing 12. Petersburg, Indiana, is the hardest-hit town in the outbreak, with six deat
7th » Universal Studios Florida opens in Orlando, FL.
10th » British Airways Flight 5390 lands safely at Southampton Airport after a blowout in the cockpit causes the captain to be partially sucked from the cockpit. There are no fatalities
12th » Russia Day: The parliament of the Russia or Russian Federation formally declares its sovereignty.
13th » First day of the June 1990 Mineriad in Romania. At least 240 strikers and students are arrested or killed in the chaos ensuing from the first post-Ceausescu elections.
19th » The current international law defending indigenous peoples, Indigenous and Tribal Peoples Convention, 1989, is ratified for the first time by Norway.
19th » The Communist Party of the Russian Soviet Federative Socialist Republic is founded in Moscow.
20th » Asteroid 5261 Eureka named Eureka is discovered.
22nd » Checkpoint Charlie is dismantled in Berlin.
30th » East Germany and West Germany merge their economies.