Mitch Prothero reports: The assignment given to the Belgian police in the summer of 2014 was straightforward but high stakes: Follow two men suspected of involvement with ISIS through the streets of Brussels. Find out who they meet, record what they say. A court had approved wiretaps for the men’s phones and for the use of tracking devices, and a specialized team of covert operators from the secret service had broken into the men’s homes and vehicles and planted bugs and GPS devices without leaving a trace.
Rather unusually, there had been little problem getting senior police officials and the courts that oversee Belgium’s personal privacy laws to approve the mission. Partly, it was the two men’s history: They had long criminal records — drug dealing, petty theft, and the occasional violent robbery — and now, unbeknownst to them, had been placed on a terrorism watch list.
With hundreds of people suspected of having ties to ISIS and al-Qaeda, it would be impossible for the Belgian authorities to monitor all of them. But these two were believed to be linked to Mehdi Nemmouche, a 29-year-old French-Algerian man charged with killing four people at the Jewish Museum of Brussels on May 24, 2014.
Belgian authorities knew there had been an alarming increase in violent rhetoric — as evidenced by the proliferation of online videos and public demonstrations, and by the criminal trials of members of Sharia4Belgium, a group advocating extremist ideology — much of it linked to the rise of ISIS in Syria and Iraq. But even for trained investigators, let alone police officers typically assigned to financial fraud or money-laundering cases, getting an overall sense of what was happening remained elusive.
In part this was because of the transformation in the threat posed by ISIS militants; as nebulous as al-Qaeda had been, it was at least an organization with a defined leadership and network of followers. These new cases were much more challenging, seemingly organic in nature, with a more diffuse structure that was nearly impossible to pin down. [Continue reading…]