- Richard Nixon arrived in Moscow, becoming the first U.S. president to visit the Soviet Union.
- The UN Security Council approved a resolution lifting the economic sanctions against Iraq and supporting the U.S.-led administration in Iraq.
- At least 140 people are killed and hundreds more injured as a three-quarter-mile-wide tornado hits Joplin, Missouri. The tornado is among the deadliest in the nation's history, destroying nearly a third of the city and damaging about 2,000 buildings, including water treatment and sewage plants.
- Tokyo Skytree, which at 634 meters high is the tallest tower in the world, opened to the public.