The two executives are also swapping territories. Menzer, 54, will take over the U.S. business after serving as chief executive officer of Wal-Mart International. Duke, 55, will run the international division after heading Wal-Mart Stores U.S. A. Its interesting they flipped the jobs, ... They want the future CEO to have experience on the domestic and international side equally. It may be that Wal-Mart looks at the international side as equal to the U.S.