Wikipedia:Today's featured article/December 29, 2022

Operation Grandslam was an offensive undertaken by United Nations peacekeeping forces from 28 December 1962 to 15 January 1963 against the gendarmerie of the State of Katanga, which was rebelling against the Republic of the Congo in central Africa. Katanga's leader, Moïse Tshombe, repeatedly violated agreements he had made with the UN and the Congolese government. The UN Operation in the Congo became increasingly impatient towards Tshombe and drew up plans to resolve the situation through force. In December 1962 Katangese gendarmes attacked UN peacekeepers, and U Thant, Secretary-General of the UN, authorised an offensive. UN forces secured the Katangese capital, Élisabethville, and destroyed much of the Katangese Air Force in December 1962. In early January Indian peacekeepers exceeded their orders and crossed the Lufira River ahead of schedule, generating panic behind the Katangese lines. The Katangese forces were decisively defeated and Katanga was forcibly reintegrated into the Congo.