Lumumba had previously appointed Joseph Mobutu chief of staff of the new Congo army, Armée Nationale Congolaise (ANC).  Taking advantage of the leadership crisis between Kasavubu and Tshombe, Mobutu garnered enough support within the army to launch a coup. With financial support from the United States and Belgium, Mobutu paid his soldiers privately. The aversion of Western powers to communism and leftist ideology influenced their decision to finance Mobutu's quest to neutralize Kasavubu and Lumumba in a coup by proxy. A constitutional referendum the year before Mobutu's coup of 1965 resulted in the country's official name being changed to the "Democratic Republic of the Congo." In 1971 Mobutu changed the name again, this time to "Republic of Zaire".