Marc Champion, Columnist

What MI5 Can Tell the FBI About Homegrown Terror

The focus of U.K.'s MI5 on detecting and preventing homegrown radicalization may be more realistic than some proposals now being floated for the U.S.

April 22, 2013 at 9:51 PM UTC

By Marc Champion

Marc Champion is a Bloomberg Opinion columnist covering Europe, Russia and the Middle East. He was previously Istanbul bureau chief for the Wall Street Journal.

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The FBI isn't the first intelligence agency to come under scrutiny for ignoring leads on young men who later proved to be terrorists. The U.K.'s MI5 faced similar questions after Islamist suicide bombers struck London's subway system on July 7, 2005.

The Federal Bureau of Investigation is under fire for not keeping Tamerlan Tsarnaev, who is accused bombing of Boston Marathon, under surveillance, despite a tip from Russia that he was interested in extremist Islamic groups.