America's former top spy has claimed that Donald Trump is being "played" by Vladimir Putin who recruited him as an "unwitting agent" of Russia.

Michael Morell said Mr Putin drew on his training as a career intelligence officer to manipulate the Republican presidential nominee from afar, causing him to advocate pro-Russian policies.

Mr Morell, the acting director and deputy director of the CIA between 2010 and 2013, said the billionaire would be a "dangerous commander-in-chief" and a risk to national security.