The Paris Peace Accords, officially titled the Agreement on Ending the War and Restoring Peace in Vietnam, was a peace treaty signed on January 27, 1973 to establish peace in Vietnam and end the Vietnam War. The treaty included the governments of the Democratic Republic of Vietnam (North Vietnam), the Republic of Vietnam (South Vietnam), and the United States, as well as the Provisional Revolutionary Government (PRG) that represented indigenous South Vietnamese revolutionaries. It ended direct U.S. military combat, and temporarily stopped the fighting between North and South Vietnam. However, the agreement was not ratified by the United States Senate.

Source: Wikipedia