US President Donald Trump has offered help to end the war in Ukraine during a 90-minute call with Russian President Vladimir Putin, Kremlin aide Yuri Ushakov said. With the United States commemorating the 250th anniversary of the nation’s founding on Saturday, Ushakov confirmed that Putin congratulated Trump on the holiday. According to the Russian presidential aide, Trump offered to help find a solution to the Ukraine war during the call, news agency Xinhua reported.