‘America First’ Does Not Mean ‘America Everywhere’

News Snapshot:

In the summer of 1930, the U.S. secretaries of war and the Navy developed War Plan Red, a 94-page document laying out detailed plans to strangle the naval and trade capabilities of the United Kingdom in a hypothetical future that involved the U.S. and U.K. at war with each other. The centerpiece was a full-scale land invasion of Canada, a seaborne attack on Halifax, a blockade of the Panama Canal, the capture of British possessions throughout the Caribbean and the Bahamas and Bermuda, and a direct challenge of the Royal Navy by U.S. naval forces in the Atlantic. Far from...