“A rapidly increasing flow of Europeans is streaming to Syria to fight on the side of rebel groups aligned with al-Qaeda, raising concerns about homegrown terrorism, top European security officials said Thursday. The number of Europeans who have traveled to fight in Syria ‘is estimated at between, more or less, 1,500 and 2,000 people, based on what we’ve heard from our colleagues,’ Belgian Interior Minister Joelle Milquet told reporters in Brussels on Thursday, giving an estimate more than double the figure offered last month by U.S. intelligence officials.”
Source: E.U. security officials note increased flow of fighters to Syria’s civil war – The Washington Post