Chechnya connections build picture of Tamerlan and Dzhokhar TsarnaevFuzzy CCTV footage taken from the sidelines of the Boston Marathon shows them standing side by side, two brothers peering over the heads of the crowd before the two bomb blasts that would kill three and injure dozens in one of the worst attacks on US soil since 9/11. The images, released by the FBI, bear out the descriptions of the two young men by those who knew them. Dzhokhar Tsarnaev, who has b
