This is an edition of The Atlantic Daily, a newsletter that guides you through the biggest stories of the day, helps you discover new ideas, and recommends the best in culture. Sign up for it here. American legislators demand scenarios for war termination that neither Ukraine nor the Biden administration can provide, because critics of Ukraine aid are asking the wrong questions. First, here are three new stories from The Atlantic: Survival Is the Only Strategy In my previous career, when I was teaching strategy and national-security affairs to U.S. military officers, we used historical case studies to analyze the decisions—some good, some disastrous—made by leaders in the United States and other nations. The specter of Vietnam and the still-painful wounds of Afghanistan and Iraq played a large role in the curriculum. These open-ended conflicts in Asia and the Middle East convinced generations of American strategists that planning in every war, no matter how the conflict began, should include an “exit strategy.” I was required to teach this concept, but I have always vehemently disagreed …