From the outset of the conflict, Russian President Vladimir Putin has calculated that Western support for Ukraine would eventually wane. And, with the Russians reported to be preparing a new spring offensive, any sign of hesitancy by Washington in terms of supporting Ukraine will encourage Putin in the belief that …

The reconnaissance drones fly several times a day from Ukrainian positions deep inside the thick forest that marches across the border into Belarus, a close Russian ally, scouring sky and land for signs of trouble on the other side. Ukrainian units are monitoring the 1,000-kilometer (650-mile) frontier of marsh and …

The Pentagon on Friday rejected China’s claim a balloon floating above the central United States was a Chinese civilian weather research craft, though the Defense Department said the airship posed no threat to Americans on the ground. “The fact is we know that it’s a surveillance balloon,” Air Force Brig. …