Moscow pressed the West on Thursday to lift sanctions against Russia over the war in Ukraine, seeking to shift the blame for a growing food crisis that has been worsened by Kyiv’s inability to ship millions of tons of grain and other agricultural products while under attack.

Britain immediately accused Russia of “trying to hold the world to ransom,” insisting there would be no sanctions relief, and a top U.S. diplomat blasted the “sheer barbarity, sadistic cruelty and lawlessness” of the invasion.

Russian President Vladimir Putin told Italian Prime Minister Mario Draghi that Moscow “is ready to make a significant contribution to overcoming the food crisis through the export of grain and fertilizer on the condition that politically motivated restrictions imposed by the West are lifted,” according to a Kremlin readout of the call.

Ukraine is one of the world’s largest exporters of wheat, corn and sunflower oil, but the war and a Russian blockade of its ports have halted much of that flow, endangering world food supplies. Many of those ports are now also heavily mined.