Kazakhstan has redirected part of its oil exports to Russia and China after Ukrainian drone attacks disrupted shipments through Russia’s Black Sea port of Novorossiysk, the Energy Ministry has said.

Ukraine has repeatedly targeted tankers and infrastructure linked to the Caspian Pipeline Consortium (CPC), an international operator whose shareholders include US energy majors Chevron and ExxonMobil, as part of a broader campaign against Russian-linked oil trade.

The CPC handles around 80% of Kazakhstan’s crude exports, more than 70 million tons per year. The attacks have forced Astana to redistribute some of these volumes and prioritize alternative routes, the ministry told Interfax on Monday.

“Among other things, there has been an increase of transportation via the Atyrau-Samara direction [to Russia] and increased supplies to… China,” the ministry said.

Ukraine has targeted civilian vessels that it accuses of transporting Russian cargo, arguing that they form part of an alleged ‘shadow fleet’ used by Russia to counter Western attempts to stifle its oil trade. Russian officials have condemned the attacks as reckless acts of piracy.

Bloomberg previously reported that Kiev assured Washington that it would suspend attacks on CPC infrastructure after Chevron CEO Mike Wirth appealed to the White House to intervene.

The disruption to Kazakh exports comes as global oil supplies are already under strain, driven primarily by the US war against Iran and a sharp decline in shipments from the Persian Gulf.

The administration of US President Donald Trump has argued that the conflict is placing greater pressure on China, one of the world’s largest oil consumers, than on the US, which is a net exporter of oil. China, however, has been partly insulated by its strategic reserves and secure access to Russian oil.

Trump faces growing domestic political pressure ahead of the November midterm elections, with opposition to the Iran war increasing among US voters and threatening Republican candidates at the polls.