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Greater East Asia War in the Pacific

The Greater East Asia War was a term used, at least publicly in December of 1941, by Japan's Imperial General Headquarters (GHQ) to refer to the conflict that followed (and ultimately reversed) Japan's invasions in the 1930s and early 1940s of other nations in eastern Asia and the Pacific. This war is more commonly known as the Pacific Theater of World War II.

Table of contents
1 Sanctions
2 War Plans

Sanctions

Economic sanctionss imposed by the United States, Great Britain, and the Netherlands in response to the invasions progressively weakened the Japanese economy. The Japanese government saw its choice as between Their decision was for extensive military operations.

War Plans

It is believed that the Imperial General Headquarters (Imperial GHQ) began planning the Greater East Asia War in April or May of 1941.

Attacking the Allies

The key objective was for the
Southern Expeditionary Army to seize economic resources under the control of Great Britain and the Netherlands, notably in, respectively, Malaya (now Singapore and part of Malaysia), and the Netherlands Indies (now Indonesia). They deemed the alliance of both these European nations with the United States as requiring this eastern plan: Their southern plans called for Following completion of these objectives, the strategy would turn defensive, primarily holding their newly acquired territory.

By November these plans were essentially complete, and were modified only slightly over the next month. Japanese military planners' expectation of success rested on the British and Soviets being unable to effectively respond to a Japanese attack because of the threat posed to each by the Third Reich; the Soviets were seen as likely to even forego declaring war.

Contingencies

There is no evidence that the Japanese planned to defeat the United States; the alternative would be negotiating for peace after their initial victories. In fact, the Imperial GHQ noted that should acceptable negotiations be reached with the Americans, then the attacks were to be canceled, even if the order to attack had already been given.

They also planned, should the US transfer its Pacific Fleet to the Philippines, to intercept and attack this fleet enroute, with the Combined Fleet.

Should the United States or Great Britain attack first, the plans further stipulated the military were to hold their positions and wait for orders from GHQ. The planners noted that attacking the Philippines and Malaya still had possibilities of success, even in the worst case of a combined preemptive attack include Soviet forces.

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