Unanswered Questions Around The Marathon Bombing

Nearly one year after two bombs exploded at the finish line of the Boston Marathon, new information continues to emerge about the alleged bombers, and particularly about law enforcement's handling of information leading up to, and following, the attack.

A review by the Obama administration released just yesterday revealed new questions about what the government knew about Tamerlan Tsarnaev, one of the alleged bombers, and when it had this information.

California Congresswoman Loretta Sanchez, who sits on the House Committee on Homeland Security, said earlier this week, "Even though Boston is standing strong, it would be a disservice to the community not to take a look back. There are still unanswered questions about the alleged the history of the alleged Boston Marathon bombers, and we owe it to the people of Boston, and the rest of America, to make sure that the appropriate officials do a thorough review of that situation."

So what are those unanswered questions? Did the FBI miss clues about the alleged bomber prior to the attack?What have we learned about the local law enforcement response, and what do we still need to know?

And there are many other questions — and no doubt many of them can't be answered now, or maybe ever. But today, we put them on the table.

Peter Canellos, editorial page editor for The Boston Globe.

Janet Reitman, contributing editor to Rolling Stone, and author of last year's feature on Marathon bombing suspect Dzhokhar Tsarnaev.

Carrie Cordero, director of national security studies at Georgetown University.