Last week, U.S. President Joe Biden announced his decision to fully withdraw U.S. forces from Afghanistan by Sept.11. After 20 years and two generations of American service members fighting there, America’s longest war will come to an end. What will the legacy of that war be for the U.S. military? …

Proponents of a U.S. grand strategy of “restraint” are perhaps most well-known for advocating the end of America’s “forever wars” and reducing the country’s military footprint in the Middle East and Afghanistan. But the so-called restrainers have also questioned the rationale for maintaining the United States’ extensive networks of alliances …

For the better part of six years since Russia and Ukraine signed the Minsk II cease-fire accord for the disputed eastern Ukrainian region of Donbass, one question has loomed: How will the U.S. and NATO respond if Russian troops again cross back over the so-called Line of Contact, dividing Ukrainian …