Labour leader Jeremy Corbyn has suggested the UK could retain its Trident submarines but without nuclear warheads.

In a wide-ranging interview on the BBC Andrew Marr Show, he also discussed the ongoing conflict in Syria and said there must be a "route through" Islamic State to help bring it to an end.

Trident

As he reiterated his long-standing opposition to nuclear weapons, Mr Corbyn pointed out that the submarines could be deployed without their nuclear warheads on board.

Mr Corbyn said that a paper put forward by shadow defence secretary Emily Thornberry is very interesting, adding that it "deserves a very good study".

Defence Secretary Michael Fallon said Mr Corbyn's comments showed Labour was a threat to Britain's national security and its economic security

Labour would weaken Britain's defences by having a nuclear deterrent without any nuclear weapons and would weaken our economy by changing the law to increase the number of disruptive strikes," he said.

"That's why Labour are a threat to the security of every working family", he added.

Resolving the conflict in Syria

Mr Corbyn said "there has to be a route through" Islamic State to help resolve the ongoing conflict in Syria.

"A lot of the commanders in Isil (another name for IS) - particularly in Iraq, but also in Syria - are actually former officers in the Iraqi army.

"Dialogue is perhaps the wrong word to use, but there has to be some understanding of where their strong points are, where their weak points are, and how we can challenge their ideology.

He added: "I believe that the neighbouring governments in the region are in touch. Look at the way in which there has been some degree at times of prisoner exchange, hostage exchange - things like that. We have got to bring about a political solution in Syria."

In the interview, Mr Corbyn also discussed other issues including: