Commentary If mainland China tries to take Taiwan again, as it tried and failed more than 70 years ago, it would likely fail again—just as the United States and the Soviet Union failed in their invasions of Afghanistan, just as the Arab armies failed in their invasions of Israel, just as other apparently overwhelming militaries failed against much smaller, but more determined, nations. But China is unlikely to try an invasion, not only because Taiwan with its 300 combat jets, 1,200 tanks, and 2 million regular and reserve troops is exceedingly well armed, but also because Chinese leader Xi Jinping, who has many internal enemies, may be too weak to dare and because China is too vulnerable to a military attack. Knowing that an invasion of heavily armed, highly determined Taiwan would not be quick and could trigger his ouster should it fail, Xi has been resorting to psychological warfare. …