Russia's recent missile strikes in Ukraine that killed dozens of civilians show Russian President Vladimir Putin is "mocking" President Donald Trump, Poland's foreign minister Radosław Sikorski said.

"There’s a point at which you just have to either put up or shut up," President Trump said of discussions to end the Ukraine war.

Ukrainian President, Volodymyr Zelenskyy, has urged U.S. President Donald Trump to visit Ukraine to “understand what President Vladimir Putin did.” Speaking to CBS on Sunday, the Ukrainian leader said,

In the aftermath of the strike, Volodymyr Zelenskiy called on the U.S. and Europe to get tough on Russia in response to what he described as terrorism.

European officials have condemned Russia’s deadly missile attack k on Ukraine’s Sumy that killed and wounded scores.