In the week following the attacks on French satirical magazine Charlie Hebdo, information has emerged that suspects Said and Cherif Kouachi were on both U.S. and British no-fly lists. Did the United States have information France did not? 

"There seems to be a gap between what we knew, that would have triggered them on our no-fly list, and what the French did or didn't do in terms of surveillance," said homeland security expert Juliette Kayyem.

If so, that puts the United States in an uncomfortable position—the same position occupied by Russia after the Boston Marathon bombings, when Russian intelligence agencies came under fire for reportedly not sharing all the information they had on the Tsarnaev brothers prior to the attacks.

"What we need to find out is: were we in possession of information from foreign intelligence agencies who will not be named that led us to put the brothers on the no-fly list...but for whatever reason never got to the French domestic agencies?" Kayyem asked.

"I predict that story will come out in the next few weeks," she said.

To hear more from homeland security expert Juliette Kayyem, tune in to her full interview on Boston Public Radio above.