20 that it attacked Russia's "largest explosives plant" and an airfield overnight, the latest in a series of long-range drone attacks in the rear to slowly grind down the bigger foe's powerful war machine from afar.A source in the Security Service of Ukraine (SBU) told the Kyiv Independent that the drones targeted the large state-owned Sverdlov Plant in the city of Dzerzhinsk in the Nizhny Novgorod region, some 900 kilometers deep into Russia.The plant has been under sanctions by the U.S. and the EU since 2023, over what the U.S. State Department says is its work "acquiring goods in support of Russia's war effort." The factory produces explosives, industrial chemicals, detonators and ammunition, the U.S. said in a press release when the sanctions were announced.The source told the Kyiv Independent that the plant produces aviation and artillery shells, aviation bombs, and warheads that help Russia continue waging its war against Ukraine.The General Staff of Ukraine's Armed Forces reported later in the day that Ukraine had also struck the Lipetsk-2 airfield in the Lipetsk region, located over 400 kilometers from the Ukrainian border.