Faiez Serraj, head of the UN-backed unity government in Tripoli, has said that Europe is at risk from terrorists posing as migrants unless western capitals help Libya stem the numbers crossing the Mediterranean. He claimed that would-be terrorists were among the tens of thousands of people passing unvetted into Italy across its open southern borders. If this is the case, all the EU will be affected. His comments follow last week’s terrorist attacks in Spain, which police have linked to radical groups in North Africa. Nearly 98,000 migrants have crossed from Libya to Italy this year, almost as many as last year, and there are at least another 700,000 in the country. There is clear evidence of a modern-day slave trade on these routes, and Italy’s social and democratic fabric is under threat amid growing public intolerance to migrants.