The United States has so far provided military aid to Ukraine that amounts to roughly a tenth of its total annual defense budget. In return, one of America’s most dangerous enemies has sacrificed almost all of its existing soldiers and the bulk of its armor. The courage of the Ukrainian people and the valor of their armed forces have accomplished all of this without a single American soldier being ordered into battle. And yet Republicans want to depict this astonishing achievement as a budgetary strain that makes America less safe.