Industry and military drone operators flew tethered and untethered first-person drones through a course designed to test endurance and maneuverability.
No reports of explosions nor videos of the alleged attack in Moscow's center appeared until the Kremlin announced it, 12 hours after the purported strike.
The Taliban have killed the senior Islamic State group leader behind the August 2021 bombing outside the Kabul airport that killed 13 U.S. service members.
By FARNOUSH AMIRI, MATTHEW LEE, AAMER MADHANI and LOLITA C. BALDOR
The Pentagon’s efforts to improve U.S. force posture in the Pacific have yielded a flurry of major agreements, with allies motivated by China's behavior.