After World War I, Japan pursued increasingly expansionist policies in Asia driven by a need for natural resources, extreme nationalism, and perceived insults from Western powers. In 1931, Japan invaded Manchuria and in 1937 launched a full-scale invasion of China, taking the capital of Nanking. During the Nanking invasion, Japanese soldiers committed horrific atrocities against Chinese civilians. By this time, the military had largely taken control of the Japanese government and was led by General Hideki Tojo, though Emperor Hirohito remained a figurehead. Seeking more resources, Japan next began expanding into Southeast Asia.