Vietnam War: U.S. President Richard Nixon announces his order to place mines in major North Vietnamese ports in order to stem the flow of weapons and other goods to that nation.
Over 400 women in Derry, Northern Ireland attack the offices of Sinn Féin following the shooting by the Irish Republican Army of a young British soldier on leave.
Watergate scandal: U.S. President Richard M. Nixon and White House Chief of Staff H. R. Haldeman are taped talking about using the Central Intelligence Agency to obstruct the Federal Bureau of Investigation's investigation into the Watergate break-ins.