Trump threatens tariffs on Russian oil over Ukraine

U.S. President Donald Trump warned he will impose secondary tariffs on Russian oil, if Moscow does not agree to a ceasefire agreement with Ukraine.

Speaking to NBC on Sunday, Trump warned that if Russia does not agree to the ceasefire, he will put secondary tariffs "on all oil coming out of Russia."

He added that the 25 percent tariffs could happen at any moment.

Trump also said that he plans to speak with Putin later this week.

The U.S. president also told NBC News that he was very angry after Russian President Vladimir Putin questioned the credibility of Ukrainian President Volodymyr Zelenskyy's leadership.