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.

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.

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

Drones operated by the Security Service of Ukraine (SBU) launched a series of attacks on Russian military installations in Crimea on Tuesday morning, a source within the power structures reports, as referenced by the Ukrainian Pravda portal.

Ukrainian forces struck several Russian military facilities in occupied Crimea with drones early on Dec. 5, Hromadske media outlet reported, citing its anonymous sources in law enforcement.