Do we have a responsibility to protect Western values, or is the high ground held by staying out of it?
A favourite debate from 2016: The Iraq war left us acutely aware of the dangers of intervening in foreign lands. Yet the outrages of Isis have demanded a response. Or is morality irrelevant in foreign affairs and our interest all that matters?
Philip Collins: Former chief speechwriter to Prime Minister Tony Blair, Collins is a Senior Fellow at the London School of Economics and columnist for The Times.
Lindsey German: A prominent left-wing activist, Lindsey German co-founded the Stop the War Coalition, and was former Editor of The Socialist Review
Hew Strachan: Professor of International Relations at St. Andrews, Strachan is a world-renowned expert on war, military strategy and the British Army.
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