First Donald Trump tried to humiliate Volodymyr Zelensky, then he halted military aid to Ukraine. World leaders can be in no doubt that the US has abandoned its role as peacekeeper. First Donald Trump tried to humiliate Volodymyr Zelensky, then he halted military aid to Ukraine. World leaders can be in no doubt that the US has abandoned its role as peacekeeper. World / North America Sydney Morning Herald – Latest News