What will happen when they return? (DELIL SOULEIMAN/AFP via Getty Images)

It’s been a while since Isis staged a major attack on the West. Occasionally the group’s degraded propaganda organs will try and claim one, but even that is less common nowadays. Still, just because Isis central isn’t orchestrating mass murder in Europe, it doesn’t mean that there aren’t still people killing in the name of jihad — if anything, the Islamist terror threat is still claiming many more lives and much more frequently than we realise.
The overwhelming focus from authorities, political leaders and the press has become the personal and psychological dramas of the perpetrators. After every incident, the attackers’ pasts are combed and every twist and turn in their tangled biographies is retrospectively injected with significance and relevance to their (often much later) decision to kill.
Of course, the personal profiles of perpetrators are important, but the resultant disconnection of the spate of stabbings, vehicular attacks and, less frequently, shootings and bombings across Europe leaves us in danger of prematurely writing off the lingering jihadist threat.
We should know by now that militant Islamism in the West has long horizons. It was eight years between the 7/7 bombings and the murder of Lee Rigby; the following year, Isis proclaimed itself a “Caliphate” and instructed Muslims worldwide to migrate to their bloody utopia — at least 6,000 from Europe answered the call. France and Belgium suffered terribly in the years to follow, while Britain saw a wave of jihadist attacks three years later.
There is no reason that lulls should be interpreted as a waning threat, yet today attention seems elsewhere. Last October, political leaders in Britain greeted what looks like the jihadist assassination of one of their colleagues with a very serious debate on online anonymity. And only this month, thanks in part to the Americanisation of political discourse, the bloated cottage industry of which I am a part was more comfortable gorging on year-old events 3,600 miles away at the US Capitol building than discussing threats closer to home.
In the wake of America’s withdrawal from the region, much has been made of the danger of Afghanistan once again becoming a terrorist safe haven threatening the West. Such concerns are certainly legitimate. Whenever they have controlled territory, jihadists have made the West pay: from the archipelago of training camps in Afghanistan which churned out the “Magnificent 19” hijackers, to the commandos dispatched from the Isis caliphate to gun down revellers and commuters in Paris and Brussels.
The more urgent concern, however, should be on Europe, and how the jihadist movement reconstitutes itself inside the continents borders after the Islamic State. The principal concern for security services has been the threat posed by Isis returnees, and with good reason. There is nothing new about Europeans travelling to jihadist conflict zones, but more travelled to Syria and Iraq for jihad than every previous jihadist insurgency combined. Not all made it home, but many did or will in future.
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