Following the invasion of Kuwait in 1990, the United Nations took a series of actions that culminated in the establishment of Resolution 661, which imposed comprehensive economic sanctions on Iraq. The UN condemned Iraq's military aggression and called for the immediate withdrawal of Iraqi forces from Kuwait. Diplomatic efforts to resolve the crisis ultimately failed, leading to the UN coalition's military intervention in Operation Desert Storm in 1991. This decisive military action liberated Kuwait and reinforced the UN's role in maintaining international peace and security, emphasizing the collective responsibility of nations to respond to acts of aggression.