By Jamie Crawford
High levels of sectarianism, carnage and the overall grinding nature of Syria's civil war continue to make that country a top destination for extremists, a top U.S. official said.
"Syria has become the pre-eminent location for al Qaeda-aligned groups to recruit, to train and to equip what is now a growing number of extremists, some of who seek to conduct external attacks," Matthew Olsen, director of the National Counterterrorism Center, told a congressional hearing on Thursday.
"From a terrorism perspective, the most disturbing element is that al Qaeda has declared Syria its most critical front," he said.
Olsen testified before the Senate Foreign Relations Committee alongside Deputy Secretary of State William Burns and Assistant Secretary of Defense Derek Chollet about the crisis in Syria and the ongoing standoff with Russia over the situation in Ukraine.