Dzhokhar Tsarnaev

Dzhokhar Tsarnaev

vk.com via AP Photo

Dzhokhar Tsarnaev has been on the run, described as "armed and dangerous" and suspected of the Boston Marathon bombing. His brother, Tamerlan, was killed during a violent police chase. The two ethnic Chechen brothers came from Dagestan, a Russian republic bordering the province of Chechnya.