The South-East Asian Theatre of World War II was the name given to the campaigns of the Pacific War in Burma, Ceylon, India, Thailand, Indochina, Malaya and Singapore. Objectives for conquering these countries included the seizure of natural resources such as rubber and petroleum from European colonies in the region. Conflict in this theatre began when the Empire of Japan invaded French Indochina in September 1940 and rose to a new level following the Raid on Pearl Harbor, and simultaneous attacks on Hong Kong, the Philippines, Thailand, Singapore and Malaya on 7/8 December 1941. The main landing at Singora (now Songkhla) on the east side of the Isthmus of Kra preceded the bombing of Pearl Harbor by several hours. Action in the theatre officially ended on 9 September 1945.