Putin call comes after the U.S. said it would halt some weapons shipments to Ukraine, which continues to fight off invading Russian forces.

While discussing the situation around Iran, Putin emphasized the need to resolve all issues by political and diplomatic means, said Yuri Ushakov, his foreign affairs advisor.

President Donald Trump and Russian President Vladimir Putin spoke by phone Thursday, but neither side reported any breakthrough on efforts to end the war in Ukraine. Trump, who promised on the campaign trail that he could end the war on his first day in office,