Event:
The deadline has passed for conclusion of negotiations by Iran and a group of six nations on Iran's nuclear program; however, as some progress has been made, the talks will continue
More Notable Events on March 31: 1992 U.N. Security Council voted to ban flights and arms sales to Libya
1968 Lyndon Baines Johnson announces he will not seek re-election
1963 Los Angeles ends streetcar service after 90 years
1921 Albert Einstein lectures in New York on his new theory of relativity
1889 300m Eiffel Tower officially opens, commemorates French Revolution
