FILE – In this Wednesday, Jan. 7, 2014, file photo an injured person is evacuated outside the French satirical magazine Charlie Hebdo’s office, in Paris. In the 20 years since the Sept. 11, 2001 terrorist attacks in the United States, a mixture of homegrown extremists, geography and weaknesses in counterterrorism strategies have combined to turn Europe into a prime target for jihadists bent on hurting the West. (AP Photo/Thibault Camus, File)