It is the Muslims who have to fight extremists

Condemnation is not enough. Mosques and local leaders must stamp out the language of hate

Terrorist movements evolve in their tactics and methods. To survive they have to. The international terrorism we face is no exception. The spectacular atrocity of 9/11 was perpetrated by al-Qaeda central command based in Afghanistan, which controlled local operatives in America with the assistance of the internet.

But in the past decade that centralised structure has been broken by feuding, Western forces and intelligence agencies. Even before the killing of Osama bin Laden in 2011, al-Qaeda’s capacity to direct operations from the centre had been severely damaged. But not its capacity to inspire violence.

Its followers have fanned out across the Muslim world, taking their bloody trade with them to recruit and train terrorists to fight locally. Terrorist tradecraft has been written up on the