In 1989, Beg drafted a contingency plan and organized a massive military exercise, "Exercise Zarb-e-Momin", to prove the military solidarity contentions. One of the notable events as a stint as a chief of army staff during the end of Cold war took place in 1990, when Iraq invaded Kuwait amidst political tensions between two Arab countries. Beg fully endorsed the United States-led military campaign against Iraq. In a briefing given to Prime Minister Benazir Bhutto and President Ghulam Ishaq Khan, Beg maintained the assessment that once the ground battle with Iraqi Army was joined, the Iraqi Army would comprehensively defeat and repel the American Army.