Nigeria's President Muhammadu Buhari has blamed an "overzealous" staff member for plagiarising parts of a speech by Barack Obama.

The mother of a dead US Muslim soldier has hit back at presidential hopeful Donald Trump for questioning her silence during a speech by her husband.

'Some of the things he espouses are very, very dangerous,' lifelong Republican worries

Republicans have painted Clinton as a Washington insider who would represent a "third term" for what they view as failed policies under Obama, elected to a second term in 2012.

Democratic leaders pointed to the résumé of Hillary Clinton in campaigning for her presidency: “There has never been a man or a woman — not me, not Bill, nobody — more qualified,” President Obama said.

President Obama delivered an impassioned speech on Hillary Clinton's behalf during the third night of the Democratic National Convention.

IT WAS a glowing tribute to his beloved wife, the woman who aims to make history by becoming President of the United States of America.

Democrat Hillary Clinton has become the first woman in US history to be nominated for president by any major party.

The former first lady, New York senator and secretary of state, will formally be installed as the head of her party in Philadelphia as she seeks to unite Democrats after a fractious primary against Bernie Sanders and to win a third consecutive White House term for her party.

I still see my role here as trying to build bridges and mend fences so that we can unify the party.

Confused about the Democratic National Committee email scandal? Here are five things to know.

All eyes will be on the Democratic National Convention in Philadelphia on Monday as more than 4,000 delegates descend on the Wells Fargo Center to announce the Democratic presidential nominee.

Here's the excerpt from Obama in 2008: