The war began when Iraq invaded Iran on 22 September 1980 following a long history of border disputes, demands for the overthrow of Saddam Hussein's regime, and secret encouragement by the US administration (Jimmy Carter, conveyed through Saudi Arabia) which was embroiled in a dispute with the new regime in Iran.The US government helps one side to fight the other side. Then they get rid of one side and fight the other side themselves?
Starting in 1981, both Iran and Iraq attacked oil tankers and merchant ships, including those of neutral nations, in an effort to deprive the opponent of trade. After repeated Iraqi attacks on Iran's main exporting facility on Khark Island, Iran attacked a Kuwaiti tanker near Bahrain on May 13, 1984, and a Saudi tanker in Saudi waters on May 16. Attacks on ships of noncombatant nations in the Persian Gulf sharply increased thereafter, and this phase of the war was dubbed the "Tanker War."The US government always sees only what it wants to see. And is it incidental, that many "best buddies" of the US turn into their "worst foes"?
... the United States offered to provide protection for tankers flying the U.S. flag on March 7, 1987 (Operation Earnest Will and Operation Prime Chance). Under international law, an attack on such ships would be treated as an attack on the U.S., allowing the U.S. to retaliate militarily. This support would protect ships headed to Iraqi ports, effectively guaranteeing Iraq's revenue stream for the duration of the war.
An Iraqi plane accidentally attacked the USS Stark, a Perry class frigate on May 17, killing 37 and injuring 21. But U.S. attention was on isolating Iran; it criticized Iran's mining of international waters, and sponsored UN Security Council Resolution 598, which passed unanimously on July 20, under which it skirmished with Iranian forces. In October 1987, the U.S. attacked Iranian oil platforms in retaliation for an Iranian attack on the U.S.-flagged tanker Sea Isle City.
Iran-Iraq War - Wikipedia, the free encyclopedia