US President Donald Trump has demanded that NATO members stop buying Russian oil and back steep tariffs on China, which he claims could bring an end to the Ukraine conflict.

In a post on Truth Social on Saturday, Trump rebuked NATO countries for what he called their unwillingness to go far enough to stop the hostilities between Moscow and Kiev. “I am ready to do major Sanctions on Russia… when all NATO Nations STOP BUYING OIL FROM RUSSIA,” he wrote.

He argued that NATO’s commitment “to WIN has been far less than 100%, and the purchase of Russian Oil, by some, has been shocking,” adding “it greatly weakens your negotiating position, and bargaining power, over Russia.”

The US president also proposed that NATO members impose 50% to 100% tariffs on China, which he said would be lifted after the Ukraine conflict ends, portraying it as additional leverage on Russia to cease hostilities.

Since the escalation of the conflict in 2022, Beijing has positioned itself as a neutral actor, insisting that it provides no assistance to either side.

NATO officials and heads of the EU states have yet to comment on Trump’s appeal.

Trump’s post comes as the US has been pushing the EU to impose additional tariffs not only on China, but also on India, over their continued import of Russian oil.

In an interview with CNBC, a European Commission spokesperson didn’t disclose the details of ongoing talks, but said the EU “has engaged with all relevant global partners, including India and China, in the context of its sanctions enforcement efforts.”

Meanwhile, the EU is finalizing its work on a 19th package of sanctions against Russia. While its exact wording remains unclear, it is expected to target the country’s oil exports and its banking sector.

While the EU has pledged to completely phase out Russian fossil fuel imports by 2027, some of its members, most notably Hungary and Slovakia, have opposed the proposal, citing their countries’ reliance on crude supplied via the Druzhba pipeline.

Russia has denounced Western sanctions as “illegal,” stating that they have not only failed to derail the national economy, but have provided an impetus for domestic development.