The catch in all of this is that the lid was coming off Pandora’s box anyway. At the close of the nineteenth century the United States and the world at large were changing in such a way that America was going to be involved in power politics no matter what it did in the Caribbean or in Asia. From Dewey’s victory in Manila Bay to the announcement of the Truman Doctrine in 1947—which can be taken as the more or less formal beginning of the Cold War—was just a half century, and that half century had seen a profound shift in the whole international power structure. When President Truman pledged this country to “support free peoples who are resisting attempted subjugation by armed minorities or by outside pressures,” he was taking a step that was logically connected with what the McKinley administration did in 1898, but it was a step that almost certainly would have been forced upon us even if the McKinley administration had behaved differently.