In hopes of seizing control of Khuzestan's oil fields of Iran and establishing a puppet government in the occupied regions of Iran, Iraq invaded Iran on September 22, 1980. This invasion led to an intense fight for the Khuzestan province. Although the fighting was fierce, other countries in world didn't view this as a major problem and also did not view Iraqi President Saddam Hussein as a major aggressor. In fact most world power nations were on the side of the Iraqis because of an ongoing international grudge against Iran. The Iraqis fought on, frequently using highly illegal chemical weapons and ballistic missiles, not willing to cease fire until Iran accepted negotiations on Iraqi terms. In 1987, resolution 598 was created by the Security Council of the United Nations. This resolution sought the nation responsible for the conflict and gave punishment for the aggressor. The fighting still continued though, even incorporating U.S. attacks on Iranian oil fields. It was clear that Iran was outnumbered and, after the shooting down of an Iranian civil airliner where 290 civilians died, on July 18, 1988 Iran officially declared the acceptance of resolution 598. This ended the conflict but tensions still remained in the Middle East.