Those Americans who might hope that the growing public opposition to continuing U.S. aid to Ukraine might signal a wave of fresh thinking about foreign policy in the Republican party are likely to be disappointed. Most members of the establishment cling to the idea that the principal worry about Republican policy views is the growing appeal of “isolationism.” A recent example was a Washington Post column by Marc A. Thiessen. Thiessen was responding to a speech by President Biden at the Normandy battlefield, and the exchange illustrated the utter sterility in America’s current foreign policy debate.