anotherview wrote:
The Japanese leadership at the time made the colossal error of attacking Pearl Harbor, thus awakening a sleeping giant. Interestingly, Japanese visitors to the U.S. at the time noted the potential of the U.S. and advised against war with the U.S.
I've read also that the U.S. had begun sanctioning Japan by restricting its oil supply. Apparently, this U.S. action, in part, stimulated Japanese leadership to declare war.
Others here may offer more history of this matter.
As with all history, pre-WWII, there are many factors which, if changed, could have lead the parties in different directions. A few to consider:
The Japanese were (still are) natural resource poor. As such, they needed iron ore and petroleum sources. They existed on mainland Asia, and along the area in and around Indonesia and the nearby archipelagoes. The Japanese invaded China, and Manchuria, which satisfied their need for iron ore, and set plans to invaded S.E. Asia to get at petroleum and rubber. Since their invasion of China, the U.S. then "retaliated", cutting off oil, and scrap metal. The Japanese really didn't want war with the U.S., especially a protracted one. It was common knowledge in Japan, that the U.S. had a far larger manufacturing base, but the U.S. wouldn't want to fight a protracted war. Admiral Yamamoto wasn't the only one who knew this.
Roosevelt, as early as 1939, was itching to get the U.S. into the European war, and he did a number of illegal acts to provide aid to Great Britain, such as trading 50 old destroyers for 99 year leases on certain British military and naval bases. Hitler, on the other hand, didn't want to fight the U.S., and ordered his U-Boat fleet not to torpedo U.S.-flagged cargo and war ships. Roosevelt ignored the "cash and carry" provisions concerning foreign combatants, and generally committed any number of impeachable offenses before December 7, 1941.
Japan, although an "ally" of Italy and Germany, was not in a position to help them directly in case of attacks on the other two Axis powers. There is speculation by historians, that the Japanese, were poised to move in several directions, and were waiting to see how Germany fared against the USSR in 1941. Had Germany been successful, Japan could have invaded Siberia, forcing the USSR into a futile two-front war. This also leads to speculation that the two great European Socialist governments would beat each other to death, sparing the rest of Europe another disastrous war.
The French and British were tricked into signing a mutual aid pact with Poland, even though there was no way to support the Poles if they were attacked. The Poles were not so innocent as everyone believed.
In September 1941, the Japanese were still interested in talks with the U.S. to avoid war. However, FDR refused to meet with the moderate prime minister, Fumimaro Konoe. When his government fell, the Japanese Army headed by Tojo took control, and war was a fait accompli by December 7, 1941. This doesn't mean that FDR knew the Japanese would attack, but that he was trying to maneuver the U.S. in that direction despite his protestations to the contrary. Admiral Kimmel was sacked, and General MacArthur, who committed far worse dereliction of duty, was awarded the Medal of Honor. So much for military honor.
The U.S. failed, because of its own ignorance dealing with the USSR and Japan, has to live with the following:
The U.S. sided with China over Japanese atrocities committed at Nanking and many other places in China, only to watch as Mao started a revolution which killed as many as 200 million Chinese, Vietnamese, Laotian, Cambodian, and Korean (North and South) people either directly, or indirectly through the spread of Chinese Communism. Which was worse?
The U.S. also failed to see that Stalin's policies also insured the enslavement of half of Germany, Poland, the Baltic States, the Balkans, and numerous other countries, including Central and South Americas. The ensuing forty-five years rolled up a huge body count.
Just food for thought.