After the Iran–Iraq War (the Tanker War phase) resulted in several military incidents in the Persian Gulf, the United States increased U.S. joint military forces operations in the Persian Gulf and adopted a policy of reflagging and escorting Kuwaiti oil tankers through the Persian Gulf to protect them from Iraqi and Iranian attacks. President Reagan reported that U.S. ships had been fired upon or struck mines or taken other military action on September 21 (Iran Ajr), October 8, and October 19, 1987 and April 18 (Operation Praying Mantis), July 3, and July 14, 1988. The United States gradually reduced its forces after a cease-fire between Iran and Iraq on August 20, 1988.[RL30172] It was the largest naval convoy operation since World War II.[8]