1972 in the Vietnam War the number of air raids against North Vietnam during all of 1971. Prime Minister Lon Nol declared President of Cambodia. Unlike the former Cambodian leader, Norodom Sihanouk, Lon Nol was a U.S. ally. The U.S. 101st Airborne Division left South Vietnam, the last U.S. ground combat division to be withdrawn from South Vietnam. The Khmer Rouge bombarded with artillery Phnom Penh, the capital city of Cambodia, killing more than 100 civilians. This was the heaviest attack on Phnom Penh since the Cambodian Civil War began in 1970. The United States boycotted peace negotiations in Paris with the North Vietnamese, citing
Treaty of Constantinople (1590) possessions. When the Ottoman Empire was engaged with the Jelali revolts, he was able to regain most of his losses, which the Ottoman Empire had to accept in the Treaty of Nasuh Pasha, 22 years after this treaty. Treaty of Constantinople (1590) The Treaty of Constantinople, also known as the Peace of Istanbul or the Treaty of Ferhad Pasha (), was a treaty between the Ottoman Empire and the Safavid Empire ending the Ottoman-Safavid War of 1578–1590. It was signed on 21 March 1590 in Constantinople (present-day Istanbul). The war started when the Ottomans, then ruled by Murad III, invaded