Ukraine conducted drone strikes on two oil refineries in Russia's Samara Oblast, causing significant fires and impacting Russia's energy infrastructure. The Novokuybyshevsk refinery was targeted first, followed by the Syzran refinery. Additionally, a separate drone attack occurred in Tikhoretsk. Meanwhile, Russia launched a drone assault on Ukraine, with significant interceptions by Ukrainian air defenses. The US government also issued a sanctions waiver for Russian oil sales at sea amid rising energy prices.