The veteran peace campaigner, whose Labour Party is around 20 points behind the ruling Conservatives in opinion polls, set out his position on a range of security and foreign policies, saying he would look again at Britain's nuclear deterrent and was against using nuclear weapons.
His comments were pounced upon by the Conservatives, who said that Mr Corbyn posed a threat to British security and was the best reason "for sticking with the strong leadership of (Prime Minister) Theresa May".
Mr Corbyn told the BBC's Andrew Marr Show that he believed that 'the only solution in Syria is going to be a political one'.
"I want us to say 'Listen, let's get people around the table quickly' and a way of achieving that - suspending the strikes, possibly."
Ms May, who said she had called the early election to shore up support for her divorce plan with the European Union and heal divisions in the country, looks set to win a large majority, with some polls putting support for her party at 50 per cent.
(Reporting by Elizabeth Piper, Editing by Jason Neely)