The United States believes that Russian President Vladimir Putin's threatened retaliation against Ukraine over its drone attack last weekend has not happened yet in earnest and is likely to be a significant,

Ukraine says that a large Russian drone-and-missile attack has targeted the city of Kharkiv, killing at least three people and injuring 21.

Air assaults on Saturday killed at least four people. Kharkiv’s mayor described an overnight strike as “the most powerful attack” since the beginning of the war.

When the chief of the local fire department was called to a scene of a Russian strike in the central Ukrainian city of Pryluky overnight, he and his brigade found five people were killed and nine injured after a drone hit a residential building.

Rachel Maddow explains how Ukraine's "Spiderweb" drone operation, which destroyed several Russian military planes, exposed a huge global nuclear vulnerability.

Amid Ukraine's recent large-scale drone attack on Russian bombers, a new report exclusively obtained by NBC News claims Russia is deploying commercial-style drones to target civilians. NBC News' Ellison Barber interviewed a victim who says Russian soldiers targeted her,

Ukraine has developed, tested, and deployed the Sky Sentinel, a AI-powered turret that it says can down Russia's Shahed drones and cruise missiles.

The head of Ukraine's SBU sec urity service, Lieutenant General Vasyl Malyuk, said on Monday that Kyiv hit 41 aircraft, including Tu-95 and Tu-22 strategic bom bers Russia has used extensively to fire long-range missiles at Ukraine.