President Donald Trump has unveiled a dramatically tougher approach to Russia, warning that countries buying Russian oil could face U.S. sanctions if Moscow fails to agree to a peace deal within 50 days. The shift comes amid growing frustration over continued Russian attacks on Ukrainian cities.

Speaking alongside NATO Secretary General Mark Rutte at the White House, Trump announced a fresh round of weapons for Ukraine, including Patriot air defense systems. He emphasized that NATO allies would foot the bill for the arms, saying, “We’re going to make top-of-the-line weapons, and they’ll be sent to NATO.”

Trump said some of the 17 Patriot batteries currently earmarked for other nations could be quickly redirected to Ukraine. “We’re going to have some come very soon, within days,” he noted, referencing an international swap arrangement to expedite delivery.

In a significant escalation, Trump also threatened secondary sanctions — penalties on nations that continue to buy Russian oil. “We’re going to be doing secondary tariffs,” he said. “If we don’t have a deal in 50 days… they’ll be at 100%.”

While Western nations have cut direct financial ties with Russia, they’ve mostly avoided targeting third-party buyers of Russian oil. Trump’s move, if followed through, could disrupt global energy flows and hit major importers like China and India.

Markets in Moscow reacted positively to the 50-day grace period, with the rouble rebounding and stocks gaining. “Trump underperformed market expectations,” said Artyom Nikolayev of Invest Era. “He gave Moscow a runway for negotiation, and he often extends deadlines.”

Trump, who returned to the presidency promising to end the war swiftly, cited repeated broken promises from President Vladimir Putin as the reason for his shift. “We probably had four deals. But each time, bombs would fall that night,” he said. Despite repeated overtures, including direct talks with Putin, Trump’s proposal for a ceasefire remains unaccepted by Moscow — though Kyiv has backed it.

Last week, Trump aired his growing irritation with the Russian leader, saying: “We get a lot of bullshit thrown at us by Putin.”

Meanwhile, Ukrainian President Volodymyr Zelenskiy met with Trump’s envoy, Keith Kellogg, to discuss strengthening Ukraine’s air defenses and collaborating with Europe on weapons production. Shortly after their talks, air raid sirens sounded in Kyiv.

In a separate move, Zelenskiy announced the replacement of Prime Minister Denys Shmyhal with his deputy, Yulia Svyrydenko, as part of what he called a broader executive transformation. Svyrydenko, 39, an economist and former trade minister, has played a key role in recent U.S.-Ukraine negotiations over mineral deals.

As the war grinds on into its fourth year, Russia still controls roughly 20% of Ukrainian territory and continues to push forward in the east, with no clear signs of retreat.