Former U.S. President Donald Trump declared on Sunday that he would impose secondary tariffs ranging from 25% to 50% on all Russian oil if he determines Moscow is obstructing his efforts to end the war in Ukraine. These penalties, he warned, could take effect within a month if a ceasefire is not reached.

Speaking with NBC News, Trump expressed anger over Russian President Vladimir Putin’s recent remarks questioning the legitimacy of Ukrainian President Volodymyr Zelenskiy’s leadership. Trump, who has frequently criticized the ongoing conflict, reiterated his commitment to brokering peace and announced plans to speak with Putin this week.

Since launching his 2024 presidential bid, Trump has repeatedly pledged to bring an end to what he calls a “ridiculous” war. Since assuming office on January 20, he has intensified his focus on Ukraine, even calling for new elections in the country and making the false claim that Zelenskiy is a dictator.

Putin recently proposed placing Ukraine under temporary administration to facilitate new elections and negotiate key agreements—effectively sidelining Zelenskiy. Trump responded by outlining his tariff threat:

“If Russia and I cannot reach a deal to end the bloodshed, and if I believe Russia is at fault, I will impose secondary tariffs on all Russian oil,” he said. “That means if you buy oil from Russia, you won’t be able to do business in the United States. There will be a 25% tariff—possibly up to 50%—on all Russian oil.”

Trump stated that these measures could be enacted within a month unless a ceasefire is achieved. He also noted that while he was frustrated with Putin, he maintained a "very good relationship" with the Russian leader and suggested that his anger would subside if Putin cooperated.