Oil prices settled higher on Tuesday as supply disruptions mounted in Russia and the U.S., while talks to end the war in Ukraine capped gains as this could boost supply from Moscow.

A top Russian official has blamed Ukraine for a recent drone attack on a Russian pipeline, arguing that the attack targets U.S. oil companies and aims to destabilize the global oil market.

Oil prices were rising in early trade after a drone strike hit a pipeline pumping station in Russia, disrupting flows to global markets. WTI jumped 1.3% to $71.62 a barrel, while Brent crude was up 0.

Oil prices strengthened on Monday as an attack on an oil pipeline pumping station in the Caspian Sea slowed flows from Kazakhstan, while investors monitored developments of a possible Moscow-Kiev ceasefire agreement that could ease sanctions and increase global supplies.

Oil prices rose on Tuesday, following a drone attack on a Russian oil pipeline pumping station, which disrupted flows from Kazakhstan and added to gains from the prior session. “The recent attack on the Caspian Pipeline pumping station has disrupted oil flows from Kazakhstan,