Well, thats not true either.
We had already sent the American Volunteer Group to Burma before Pearl Harbor and they were not so stupid as to not be cognizant that the flying tigers were the tip of the spear in American Plans to force Japan out of China.
The end of their Empire was coming either way.
Pearl Harbor slowed it down.
It was pretty pushy of us to send a few flyers to Burma. That's probably why the Japanese invaded China in the first place!!! /s