Former US president Donald Trump has pleaded not guilty to federal charges alleging he hoarded classified documents detailing sensitive military secrets, and schemed to thwart government efforts to get them back.Trump appeared before a judge in Miami's federal court on Tuesday in a stunning moment in American history days after he became the first former president charged with federal crimes.

Former US president Donald Trump has pleaded not guilty to federal charges alleging he hoarded classified documents detailing sensitive military secrets, and schemed to thwart government efforts to get them back.Trump appeared before a judge in Miami's federal court on Tuesday in a stunning moment in American history days after he became the first former president charged with federal crimes.