Given the attention lavished on the Kuomintang (KMT) by both U.S. President Franklin D. Roosevelt and the media, especially Henry Luce's "Time Magazine", the U.S. public was slow to take notice of the Communists' rise in importance in China. When the U.S. joined China and the other Allied Powers of the Second World War in the War against Japan, there had been little contact between U.S. diplomats and the CPC, even though the KMT-led United Front against Japan made the Communists an implicit ally.