Donald Trump claimed in Monday’s US presidential debate that his rival Hillary Clinton does not have the “stamina” to be president, hitting at the Democrat after a recent bout of pneumonia.

“I said she doesn’t have the stamina. And I don’t believe she does have the stamina. To be president of this country, you need tremendous stamina,” Trump said.

Clinton fired right back: “Well, as soon as he travels to 112 countries and negotiates a peace deal, a ceasefire, a release of dissidents… or even spends 11 hours testifying in front of a congressional committee, he can talk to me about stamina.”

With six weeks until election day and polls showing a virtual dead heat, the Democrat Clinton repeatedly questioned her rival’s fitness to serve in the Oval Office.