KYIV — Russia is trying to sever Ukraine’s access to the Black Sea, President Volodymyr Zelensky said yesterday, following days of ramped-up airstrikes on ports and energy facilities in the Odesa region and a critical route to the Moldova border.

Russia has unleashed an almost continuous drone and missile campaign against a region where ports key to Ukraine’s foreign trade and fuel supplies operate, after Moscow threatened to cut “Ukraine off from the sea”.

Strikes have escalated even as the US pursues an uphill diplomatic drive to coax a deal to end the war. Ukraine held talks with the US team on Friday, and American negotiators were set to meet Russian officials in Florida on Saturday.

“The situation in the Odesa region is harsh due to Russian strikes on port infrastructure and logistics. Russia is once again trying to restrict Ukraine’s access to the sea and block our coastal regions,” Zelensky told reporters in Kyiv.

Russia’s aim is “to sow chaos, to exert moral pressure during winter... so that there is no fuel, no food supplies, so that there are problems with medical supplies,” he said.

Russia’s attack on Pivdennyi port on Saturday hit reservoirs, Ukrainian Deputy Prime Minister Oleksiy Kuleba said on the Telegram messaging app, a day after a missile strike on the port killed eight people and injured at least 30.

Geneva-based vegetable oil producer Allseeds said three tanks storing sunflower oil at the site were set ablaze in Pivdennyi, and one of its workers was killed and two injured.

Russia’s Defence Ministry was not available for immediate comment. The Kremlin has said Ukraine’s economic infrastructure is a legitimate military target in the almost four-year-old full-out war.