The U.S. and its allies have been engaging in a significant military intervention to help Ukraine resist Russia’s brutal invasion for the past nine months. Not only have they given considerable financial, humanitarian and military resources — including sophisticated weapons systems — to Ukraine, but they also have embedded advisers with Ukrainian forces, allowed thousands of their citizens to join Ukraine as foreign fighters and provided a vast amount of real-time intelligence to the country. While this intervention has enjoyed broad domestic support, it has its share of determined critics. No…