Oil markets on Monday shrugged off U.S. President Donald Trump's threat to hit buyers of Russian oil with tariffs as the shock value of the barrage of threats from the White House begins to wear thin with jaded traders.

Good morning. Trump threatens “secondary tariffs” on Russian oil. Apple is working on a Health app revamp. And South Korea’s cosmetics boom is sparking a wave of deals. Listen to the day’s top stories.

Trump’s comments on Sunday revealed the frustration at the White House with the Russian president as negotiations over a settlement of the war in Ukraine continue on without a clear breakthrough. The new threat to hit imports from countries that purchase Russian oil come as Trump prepares to impose tariffs on goods from many of America’s largest trading partners on Wednesday.

This is the result of peace negotiations with Putin,” said one Ukrainian, after a Russian attack in Dnipro killed four people and injured more than 20.

A Russian drone strike on Ukraine's second-largest city killed two people and wounded 35 late on Saturday, officials said, as President Volodymyr Zelenskiy urged Kyiv's partners to respond to such attacks while seeking peace in the three-year-old war.