Greek Prime Minister Kyriakos Mitsotakis comments on US President Donald Trump's labeling of his Ukrainian counterpart Volodymyr Zelenskiy as a "dictator." Trump is a "very smart man" who "has his own unique way of expressing himself," Mitsotakis says on Bloomberg Television. Europe needs to come up with a "unified voice," he adds, as the bloc seeks to boost its own security and "not just Ukraine's."