And now the reality of what Corbyn has said (April 2018, BBC News):
The best defence for Britain is a government actively engaged in seeking political solutions to the world’s problems," he said in a speech to the Chatham House think tank before last year’s general election.
"This doesn’t make me a pacifist. I accept that military action, under international law and as a genuine last resort, is in some circumstances necessary.
“But that is very far from the kind of unilateral wars and interventions that have almost become routine in recent times.”
Pushed afterwards for examples of military action he thought had been justified, he said: "I doubt many, if any, in this room would have questioned the legitimacy, ultimately, of the Second World War.
“Because of the catastrophe that had approached by the rise of the Nazis all across Europe to that point. And so I think there has to be, ultimately, that preparedness to use military force.”
On the other hand, he said “many” would have questioned the legitimacy of the First World War.
In more recent times, he said British forces had done “great” peacekeeping work in Cyprus and he praised the “incredible work done by the Royal Marines and others in helping refugees to survive” in the Mediterranean.
One military action he gave unequivocal backing to was the UN-backed intervention in East Timor in 1999, when troops were sent in to quell violence after a UN-sponsored referendum showed overwhelming support for independence from Indonesia.
The Labour leader said he had been a UN observer at the East Timor referendum "which had come at the end of an appalling civil war that had gone on for decades, in which tens of thousands of people had lost their lives.
“And that UN intervention, to enforce the ceasefire, by and large worked.”