New York honors the nearly 3,000 people killed on September 11, 2001 in a ceremony at Ground Zero, the site where hijacked Al-Qaeda planes brought down the Twin Towers.

CIA chief John Brennan said secret findings of a 2002 congressional investigation into the 9/11 attacks should not be taken as evidence of official Saudi complicity.

Jeb Bush fires back at Republican presidential candidate Donald Trump who slammed George W Bush over the September 11, 2001 attacks that brought down the World Trade Center.