The Latest on Russia-Ukraine Tensions: Alleged Drone Attack and Denials.

Messages on Russian drones launched at Odesa overnight read “for Moscow” and “for the Kremlin,” according to the Ukrainian military, an apparent reference to an alleged assassination attempt against Russian President Vladimir Putin. Ukraine has denied any involvement in what Russia says was a drone attack on the Kremlin and an assassination attempt against Putin early Wednesday morning. Explosions were heard in Kyiv and Odesa early Thursday morning, with air defenses activated and people told to stay in safe places until air alerts stopped ringing, according to Ukrainian officials. A former Russian lawmaker linked with militant groups in Russia claims an alleged drone attack on the Kremlin on Wednesday was the work of what he calls Russian partisans, not the Ukrainian military.