In December 1941, following the Japanese attack on Pearl Harbor, the United States entered the war. Britain was now also at war with imperial Japan, whose forces inflicted rapid defeats on British forces in Asia, capturing Hong Kong, Malaya, Singapore and Burma. Nevertheless, Churchill expressed the view that with the entry of the USA into the war, ultimate victory was assured for the Allies. "All the rest was merely the proper application of overwhelming force". From this point onward, the strategy of the Allies, other than the USSR, is better addressed as joint Allied Strategy