FILE - In this Saturday, Oct. 26, 2002 file photo, special forces troops enter the theater seized by Chechen rebels, in Moscow, Russia. This week Russia marked the 10th anniversary of a Chechen rebel hostage-taking raid on a Moscow theater. The attackers took about 800 people hostage, and 129 of the captives died, nearly all from the gas Russian special forces used to knock the hostage-takers out before storming the theater. (AP Photo/Dmitry Lovetsky, File)