The former prime minister will warn the west it needs to take sides in the Middle East and move the battle against Islamist extremism to the top of the political agenda.
In a speech to Bloomberg in London on Wednesday, he will say:
The important point for western opinion is that this is a struggle with two sides. So when we look at the Middle East and beyond it to Pakistan or Iran and elsewhere, it isn’t just a vast unfathomable mess with no end in sight and no one worthy of our support. It is in fact a struggle in which our own strategic interests are intimately involved; where there are indeed people we should support and who, ironically, are probably in the majority if only that majority were mobilised, organised and helped.
Photograph: Matt Rourke/AP