The Cold War conflicts in Korea and Vietnam, fought in the context of the Geneva Conventions of 1949, differed in the nature of surrender. After the first year of the Korean War, the war became a stalemate. However, the fighting ended only with an armistice two years later. The delay resulted in part from an ideological dispute between the belligerents. American negotiators insisted that POWs be allowed to refuse repatriation to the country for which they fought; the Communists insisted on compulsory repatriation. The armistice allowed POWs to choose, and the Communists were internationally embarrassed because large numbers of Chinese and North Koreans refused repatriation. The major American intervention in Vietnam was fought primarily as a guerrilla campaign, with some large-scale battles. The Americans made little headway, and protests against the war expanded. After Nixon won the 1968 presidential election, he first tried carrot and stick means to convince the Viet Cong and the North Vietnamese to cease fighting. When these failed, he and Kissinger maneuvered to end the American intervention by any means necessary. The Paris Peace Accords granted nearly all the enemies’ demands so that the United States could withdraw American troops. Withdrawal amounted to utter surrender.