On 12 and 13 March, Ukraine conducted heavy drone attacks on several Russian oil refineries, seriously damaging one and causing a fire at another, in one of the most serious attacks against Russia's energy sector in recent months. Oil prices rose 2% partly due to concerns about supply disruption following the attacks which Vladimir Putin said were an attempt to disrupt his country's presidential election this week. Russia and Ukraine have both used drones to strike critical infrastructure and military targets, with Kyiv stepping up attacks on Russian refineries and energy facilities in recent months. Ukraine's SBU security service claimed responsibility for the strikes, stating that they aim to weaken Russia's economic strength. The attacks targeted key sources of Russia's income, potentially reducing gasoline and diesel output. Ukrainian forces also targeted a Russian airbase and military airfield. The escalation underscores the intense conflict between the two nations and the potential economic impact of attacks on Russia's energy infrastructure.