Image: U.S. Secretary of State Henry Kissinger (L) joins President Richard Nixon and Russian leaders in a toast after the signing of agreements at the Kremlin on July 3, 1974 following a seven-day summit.

(Wednesday, July 3, 1974; during the Cold War) — U.S. President Richard Nixon and Soviet leader Leonid Brezhnev signed a treaty today in Moscow limiting the size of underground nuclear weapons tests. Nixon then flew back to the U.S., landing at a small air force base in Maine and gave the nation a report on his foreign travels (click here for video at 2:35:53).