U kraine launched one of the biggest drone attacks on the Moscow-annexed Crimean Peninsula since the full-scale war that started with Russia’s invasion 21 months ago, Russian officials have said.

Russia says Ukraine sent a wave of 41 drones over Crimea targets overnight on Monday. Ukraine has not commented on the attack, but a defense official had hinted one was coming. Various unofficial reports say explosions were heard in three key sites in Crimea.

Ukraine launched a drone attack on the Crimean Peninsula as Russia escalated its attack against Avdiivka, a strategically important city in eastern Ukraine that has been mostly destroyed. KYIV, Ukrain

To protect their rotorcraft, the Russians scattered them to smaller, hidden bases farther from the front. Now the Ukrainians are finding, and striking, those bases.

A Russian drone attack killed one person and damaged port infrastructure in Ukraine’s Odesa region, the regional governor said Thursday. Oleh Kiper said Odesa was under attack for two hours, and that while air defenses shot down most of the Russian drones involved,

At a secret base on the Dnipro river, Ukraine’s new fleet of sea drones flanks both sides of a dockside warehouse packed with enough explosives to ­destroy Russia’s entire Black Sea navy. Ukraine’s military intelligence service,