- Suicide bombings at Brussels Airport and a metro station in the city leave at least 31 people dead
- Paris attacker Salah Abdeslam was captured in Brussels last week after more than four months in hiding
- The Belgian capital's Molenbeek district has become notorious as a hotbed of violent jihadist ideology
- Belgium has the highest number of foreign fighters, per capita, in Syria of any Western European nation
This story was originally published in a slightly different form before the attacks on Brussels, in which terrorists targeted the city's airport and one of its metro stations, killing at least 31 people, and injuring 270 more. For the latest updates on the hunt for those responsible, click here.
Belgium (CNN)Brussels: It's a quaint but bustling city, famed for its picture postcard squares, its chocolate and its beer. But it is rapidly becoming infamous, too, as a fertile recruiting ground for jihadi fighters.