In just one speech by U.S. Defense Secretary Pete Hegseth this week, the most powerful member of NATO has thrown the world’s biggest military alliance into disarray, raising troubling questions about America’s commitment to European security. Hegseth told almost 50 of Ukraine ’s Western backers on Wednesday that he had joined their meeting “to directly and unambiguously express that stark strategic realities prevent the United States of America from being primarily focused on the security of Europe.”