Changes

The U.S. increased military and financial aid to China, and embarked on a program of strengthening its military power in the Pacific. In 1941 the U.S., in alliance with Britain and the Netherlands, ended oil shipments to Japan, thus cutting off 95% of Japan's oil supply.  The American policy was that Japan's aggression had to end and would no longer be facilitated by American oil. Japan found itself in a position where its oil reserves would be exhausted in two years, unless it either made peace or went to war and conquered the oil fields in Sumatra (controlled by the Dutch) and Burma (controlled by the British). The chief of the Navy told the emperor that if Japan resorted to war, it would be very doubtful that it could win. The decision was war, by going south to seize the resource-rich territories of Southeast Asia.  Knocking out the American fleet was critical to the success of the strategy, hence the attack was ordered on Pearl Harbor.

The U.S. increased military and financial aid to China, and embarked on a program of strengthening its military power in the Pacific. In 1941 the U.S., in alliance with Britain and the Netherlands, ended oil shipments to Japan, thus cutting off 95% of Japan's oil supply.  The American policy was that Japan's aggression had to end and would no longer be facilitated by American oil. Japan found itself in a position where its oil reserves would be exhausted in two years, unless it either made peace or went to war and conquered the oil fields in Sumatra (controlled by the Dutch) and Burma (controlled by the British). The chief of the Navy told the emperor that if Japan resorted to war, it would be very doubtful that it could win. The decision was war, by going south to seize the resource-rich territories of Southeast Asia.  Knocking out the American fleet was critical to the success of the strategy, hence the attack was ordered on Pearl Harbor.

Roosevelt meanwhile though that Japanese movements south would be deterred by the threat of large scale air bombing of the main cities of Japan.  He ordered raids undertaken (in the name of China) by American forces in China, but they never got close enough. Washington then ordered new B-17 long-range bombers to the Philippines, expecting to have enough air power by spring 1942 to seriously threaten Japan. It was too little too late.

Roosevelt meanwhile thought that Japanese movements south would be deterred by the threat of large scale air bombing of the main cities of Japan.  He ordered raids undertaken (in the name of China) by American forces in China, but they never got close enough. Washington then ordered new B-17 long-range bombers to the Philippines, expecting to have enough air power by spring 1942 to seriously threaten Japan. It was too little too late.

==Japanese plan==

==Japanese plan==