The father of a Gold Star solider slain in the Iraq War features in a new campaign advert for Hillary Clinton, questioning Donald Trump’s stance on American Muslims.

The one-minute video shows Khizr Khan in his house, telling the story of his son Humayun Khan, who died in 2004, holding his former military cap and the American flag that wrapped his son's coffin when he was transported home from Iraq.

"He saw a suicide bomber approaching his camp. My son moved forward to stop the bomber when the bomb exploded.

"He saved everyone in his unit. Only one American soldier died. My son was Captain Humayan Kahn.

"He was 27 years old, and he was a Muslim American.

"I want to ask Mr Trump, would my son have a place in your America?"

His comments come shortly after the second presidential debate, where the Republican nominee said Mr Khan's son would be alive if Mr Trump had been president as he said he opposed the Iraq War.

The statement prompted Ms Clinton's adviser, Jesse Lehrich, to tell Mr Trump on twitter to "go f*** yourself". He later apologised for his language.

Mr Khan made a big impact when he gave a speech at the Democratic National Convention, condemning Mr Trump for "smearing" American Muslims.

He waved a copy of the US constitution and challenged Mr Trump as to whether he had read it.

Mr Trump responded that Captain Khan was a "hero", but that his father, Mr Khan had been "nasty" to him.

He also asked whether his wife, Ghazala Khan, had been "allowed" to say anything at the convention as she stood beside her husband on the stage.