US President Donald Trump speaks at an event at the White House on March 24, 2025. (Photo: VNA)

In an interview with NBC, Trump said: "If Russia and I are unable to make a deal on stopping the conflict in Ukraine, and if I think it was Russia’s fault, I am going to put secondary tariffs on all oil coming out of Russia.”

Trump said he will ban all Russian oil importers from doing business in the US if no agreement is reached with Moscow.