U.S. President Donald Trump warned that he would impose secondary tariffs of 25% to 50% on buyers of Russian oil if he believes Moscow is hampering his efforts to end the war in Ukraine, Reuters Report.

Speech NBC News In an interview Sunday morning, Trump said he was “angry” at Russian President Vladimir Putin and was frustrated by the lack of a ceasefire.

Trump’s remarks come after Putin’s recent criticism of Ukrainian President Volodymyr Zelenskiy, which the U.S. president sees as a personal offense to his peaceful efforts.

“If I can’t reach an agreement with Russia on Ukraine’s stopping the bloodshed, if I think it’s Russia’s fault… I’ll issue secondary tariffs on all Russian oil,” Trump said.

He clarified that such measures would mean “if you buy oil from Russia, you can’t do business in the United States.” He added: “All oil in all oil will generate 25% to 50 points tariffs on all oil.” Trump said those tariffs could be implemented within a month.

Moscow did not respond immediately, although Russia repeatedly regarded Western sanctions as “illegal” and aimed at achieving economic advantages.

Trump spent a weekend in Florida and revealed he plans to talk to Putin later this week. The Kremlin has acknowledged two public appeals among leaders in recent months, but suggests that there may be other discussions. The White House has not confirmed when the phone will be called or Trump also talks with Zelenskiy.

Trump has prioritized ending what he called “absurd” war, but progress is still slow. Putin recently suggested that Ukraine could be placed within the scope of a provisional government to promote new elections.

Trump insisted that Putin understood his frustration, but added: “I have a good relationship with him” and his anger “quickly dissipated…if he did the right thing”.

It is his threat due to increased trade pressures, including the recent secondary tariffs on Venezuelan oil buyers and plans to import imports from countries with a huge trade surplus. The move could particularly affect India and China, both major importers of Russian oil.

Trump also suggested that he could impose similar penalties on buyers of Iranian oil unless Tehran agrees to stop its nuclear weapons program.