When Iraq invaded Kuwait in 1990, Iran criticised and condemned the invasion. This stance from Iran, in favor of the Kuwaitis, and the anti-Iraqi coalition of the Persian Gulf states helped to improve relations between Iran and the GCC, namely Saudi Arabia. Both Iran and Saudi Arabia rejected the use of force as a solution to regional problems and opposed the invasion of Kuwait by Iraq. Iran went further, by backing UN sanctions against Iraq. Iran viewed the Iraqi occupation of Kuwait as a serious threat, considering it the first step towards its expansionist mindset. During the war, relations between Iran and Saudi Arabia thawed considerably and the official ties were restored in 1991.