Biden says he is ready for two terms as US president amid Trump's jibes

Democratic Presidential Nominee Joe Biden has said that he is "absolutely" ready to serve two terms as the US president, amidst increasing attacks from President Donald Trump's election campaign over the former vice president's age and mental acuity.

If elected in the November 3 Presidential election, Biden, 77, will become the oldest US president ever to be sworn in at the age of 78.

"Absolutely," Biden told the ABC News in an interview, when asked if he is open to the possibility of serving terms in the Oval Office.

"I think it's a legitimate question to ask anyone over 70