Japan is an island country lacking in resources. At that time, China had been at war for many years. In order to maintain the war, Japan must import a large number of strategic materials. Among these strategic materials, the most important materials are oil and scrap steel. At that time, Japan was desperately accumulating oil. Before the Pacific War, Japan had accumulated 43 million barrels of oil. However, this oil is only enough for Japan to fight for half a year. After the war, some Japanese commented that it would be better not to have this kind of oil, which led to Japan's national subjugation.

Today, after the Japanese were hit by two atomic bombs and forced to declare their surrender, they understood everything. However, in those days, the Japanese did not have this idea. Years of military adventure, betting on the success of the National Games, made Japan crazy. They have no concept of failure at all. They only think about how to realize their world rule.

At that time, the war between Japan and China entered a protracted war. Unsurprisingly, people of insight in China predicted that Japan would be mired in the quagmire of war step by step. In order to get out of the war as soon as possible, Japan tried every means. During this period, Britain and the United States actively oppressed China to make peace with Japan, in order to bring disaster to the East. The United States provided Japanese with war materials such as oil and scrap steel, while Britain simply closed the Yunnan-Myanmar Highway for China's foreign trade and transportation. However, this one still didn't give in, gritted his teeth and insisted on the war.

In this case, in order to solve the problem of lack of domestic resources, Japan turned its attention to Nanyang, an oil-producing area. This conflicts with the interests of the United States in the Pacific. As soon as Japan entered French Indian zhina, the United States immediately announced the freezing of Japanese assets in the United States and restricted the shipment of goods to Japan.

In this way, Japan has to negotiate with the United States. The focus of the negotiations between the two sides is that the United States demands that Japan withdraw its troops and fix the situation in? July 7th Incident? Before. This is something that Japanese militarists can't promise. Japanese militarists marched into French Indian zhina in order to solve the China war, and it is impossible for them to brag about their achievements up to now.

At this time, Japan carried out war planning. Japanese militarists made plans based on several aspects.

First, the Japanese navy has an advantage over the US Pacific Fleet. If you go to war, you can guarantee victory for six months to one year.

Second, the German-Soviet war went smoothly, and the Soviet Union had to deploy Siberian troops to fight in the European battlefield, so that the threat from the north disappeared. Japan can deploy a large number of troops to fight south.