Ukraine has intensified its long-range drone campaign against Russian energy assets, launching a string of strikes between 13 and 15 August that ranged from the Bryansk region near the border to the Caspian Sea, hundreds of kilometres behind the front lines. The offensive began on 13 August when explosive drones hit the Unecha pumping station in Bryansk, a key node on the Druzhba pipeline that feeds several European refineries. While Kyiv reported significant damage, Russian authorities said crude flows through the network continued uninterrupted. In the early hours of 14 August, multiple drones ignited large fires at Lukoil’s Volgograd refinery—one of Russia’s ten largest. A person familiar with the matter said the 300,000-barrel-a-day plant later halted crude intake after debris from the attack set oil-product storage ablaze. Less than 24 hours later, Ukraine’s General Staff said its forces struck Rosneft’s Syzran refinery in Samara Oblast, sparking fresh fires at a facility that processes roughly seven million tonnes of crude a year. Local authorities confirmed a drone-related blaze but did not detail the damage. The same night, Ukrainian special-operations units targeted the port of Olya on the Caspian Sea, saying they damaged the Russian-flagged cargo ship Port Olya-4, which Kyiv alleges was carrying Iranian drone components and ammunition. Moscow has acknowledged intercepting waves of unmanned aircraft over several regions but has not commented in detail on the refinery or port damage. Kyiv portrays the strikes as a bid to erode Russia’s fuel and logistics network ahead of a planned summit between U.S. President Donald Trump and President Vladimir Putin in Alaska. Energy traders are monitoring the situation, though global crude prices have so far shown limited reaction.