The UK’s unwillingness to risk military conflict with Russia is understandable. Corbyn’s justification for non-intervention is much less so.

When the history of the current Coalition Government is written, probably their single gravest set of errors will be able to be summed up in four letters: SDSR. The October 2010 Strategic Defence and Security Review, thrown together in just five months, will go down in history as a textbook example of what happens when short-term financial and political considerations are allowed to undermine sound defence thinking.

Perhaps we should stake out the case for interventionism in very simple terms: an internationalist party does not stand by and permit the slaughter of children in gas attacks.