A Nov. 23, 2010, photo shows Michael Adebolajo (center, in dark T-shirt) with suspected Al-Shabab recruits who were arrested by Kenyan police. Adebolajo, one of the main suspects in the brutal murder of a soldier in London, was discharged from the hospital Tuesday. AFP/AFP/Getty Images hide caption

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As Ian Rigby spoke Friday about his stepson Lee, a British soldier who was murdered on a south London street this week, the young man's widow, Rebecca (right), and his mother, Lyn, reached out. Dave Thompson /Reuters /Landov hide caption

itoggle caption Dave Thompson /Reuters /Landov

U.S. Army Maj. Nidal Hasan is charged with a 2009 killing spree that killed 13 people at Fort Hood in Texas. Homegrown terrorism by Muslim Americans has been growing over the past decade. HO/AFP/Getty Images hide caption

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Smoke rose Sunday during demining operations at the gas plant in eastern Algeria that Islamist militants attacked last week. Louafi Larbi /Reuters /Landov hide caption

itoggle caption Louafi Larbi /Reuters /Landov

Algerian men look at national newspapers headlining the terrorist attack and kidnapping in Amenas at a news stand in Algiers on Thursday. Ouahab Hebbat/AP hide caption

itoggle caption Ouahab Hebbat/AP