Top security and intelligence officials are warning the deadly attacks in Paris - claimed by the Islamic State terror group - are likely not a "one-off event." And fear of more plots in the pipeline is again putting the spotlight on the problem of foreign fighters returning from the battlegrounds of Syria.
With the wounds still raw from Paris and much of Europe on edge, there's the question that won't go away – have more foreign fighters returned to the West to wreak havoc in the name of the group known as Islamic State?
In Europe, the challenge is great.
David Sterman of New America said jihadist networks are expanding.
"You have far greater numbers of people who have gone over to Syria, greater numbers of people have returned, and more developed jihadist networks that they're drawing upon," said Sterman.
Experts say there's no single psychological profile for who is likely to become a foreign fighter, let alone come back as part of a sleeper cell.
But some patterns are known: the average male Western foreign fighter is 25. The typical female is 21.
One-third were active in online jihadist forums, and more than 80 percent have joined Islamic State.
Lahur Talabani, intelligence director for the Kurdistan Regional Government in Iraq, thinks the appeal of Islamic State is falling.
"The attraction is not as much as it was at the beginning. For sure we've seen this through intelligence. But they may be still attractive to some people," he said.
U.S. intelligence officials worry that attraction is still substantial – and combined with Islamic State's flexibility could help the group pull off more attacks in the West.
And there's precedence -- the brothers who carried out the Charlie Hebdo shootings in Paris in January had ties to al-Qaida, but were also connected to Ahmedy Coulibaly, who died in a shootout at a French grocery store having pledged himself to Islamic State.
Vocabulary
havoc:浩劫
jihadist:圣战主义者
2015年职称英语理工类完形填空一级重点文章(3)
2015年职称英语理工类完形填空一级重点文章(2)
综合类职称英语A级完形填空考试:精选练习题(3)
职称英语综合类考试完形填空经典练习题及答案(3)
2015年职称英语理工类完形填空练习(1)
2015年职称英语考试理工类完型填空训练(1)
职称英语理工类考试完形填空题答题辅导(5)
2015年职称英语考试理工类完形填空基础备考题(5)
职称英语《综合类》2015年C级考试练习题:完形填空(3)
职称英语《综合类》2015年C级考试练习题:完形填空(2)
2015年职称英语考试理工类完型填空训练(4)
职称英语2015年综合类C级完形填空练习题(4)
职称英语理工类考试完形填空题答题辅导(1)
2015年职称英语理工类完形填空练习及答案(4)
职称英语理工类考试完形填空题答题辅导(2)
2015年职称英语理工类完型填空强化练习题(3)
职称英语综合类考试专题训练之完形填空(4)
职称英语理工类考试完形填空题答题辅导(4)
2015年职称英语理工类完形填空一级重点文章(5)
2015年《综合类》职称英语完形填空精选练习题(3)
职称英语理工类考试完形填空题答题技巧(3)
2015年职称英语考试理工类完型填空训练(5)
职称英语《综合类》2015年考试练习题之完形填空(2)
2015年职称英语理工类完形填空练习(2)
2015年职称英语理工类完型填空强化练习题(1)
2015年《综合类》职称英语完形填空精选练习题(1)
职称英语理工类考试完形填空题答题辅导(3)
职称英语《综合类》2015年考试练习题之完形填空(4)
职称英语《综合类》2015年C级考试练习题:完形填空(4)
综合类职称英语A级完形填空考试:精选练习题(4)
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |