Belgian troops man a checkpoint outside Brussels airport in Zaventem on March 24, 2016, two days after terror attacks in the Belgian capital.
Police in Brussels ramped up a desperate hunt for a fourth man suspected of taking part in the Islamic State bombings that struck at the very heart of Europe. Flags in the shellshocked city of Brussels hung at half-mast as Belgium mourned the 31 people from all over the world killed in the attacks, while doctors battled to save scores more injured in the carnage. (Patrick Stollarz/AFP/Getty Images)Belgian authorities have released this still image from surveillance video of three men suspected of taking part in the attacks at Belgium's Zaventem Airport. (Belgian Federal Police)
The Associated Press reports that some 5,000 Europeans have gone to Syria to train with ISIS, and several hundred of them are now returning to Europe.
They're trained to commit terrorist attacks in European cities and they're making their own decisions on when and where to commit what European police are calling "special forces-style attacks."
Lori Hinnant of the Associated Press reported the story, and she speaks with Here & Now's Meghna Chakrabarti.
