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The attack came just hours after Russia’s President Vladimir Putin and his US counterpart Donald Trump discussed the war in Ukraine. While Putin refused to commit to a 30-day ceasefire with Ukraine, he agreed to a plan under which Russia and Ukraine will stop mutual energy infrastructure strikes for the same time.

The CPC infrastructure, stretched between Kazakhstan’s giant oil fields and Russia’s Black Sea coast, is the single-largest route for exports of Kazakh barrels. It also ships some crude from Russia’s Caspian projects. The latest attack highlights the vulnerability of a route that’s key for the nation and its European buyers.

“The CPC pipeline continues its operations,” the CPC press service said. “The Kropotkinskaya pumping station is still not operational and repair works there are underway,” so the damaged depot could not affect CPC flows, it said.