Sanders says Clinton must be US president

Bernie Sanders has urged Democrats to put Hillary Clinton in the White House, in a speech to the party convention. The Vermont senator received a three-minute standing ovation when he took the stage in Philadelphia. "Hillary Clinton must become the next president of the United States," he said as the crowd erupted in cheers. First Lady Michelle Obama also received a rapturous reception for a powerful speech in which she took on Republican nominee Donald Trump. "Don't let anyone ever tell you that this country isn't great, that somehow we need to make it great again," she said, referring to Mr Trump's signature slogan "Make America Great Again". "Because this, right now, is the greatest country on earth," she added. Earlier in the evening, Mr Sanders' fans had booed any mention of Mrs Clinton, who will accept the party's presidential nomination on Thursday. And as he implored them to back his Democratic rival in the final major speech of the night, they held aloft their blue "Bernie" signs and chanted his name.