A look at the troubled history of Chechnya, where the Boston Marathon bombings suspects are said to have come from.
Police say brothers Tamerlan and Dzhokar Tsarnaev are behind the Boston Marathon bombings. The two came from the North Caucasus region, which includes the Russian republic of Chechnya, and moved to Kazakhstan at a young age before coming to the United States several years ago.
On the morning of April 19, 1995 Timothy McVeigh killed 168 people during the Oklahoma City bombing. Find out more about that tragedy here.