By Alissa de Carbonnel MOSCOW (Reuters) - The right-hand man of Russia's most wanted insurgent was killed by security forces on Tuesday, officials said, as Moscow tries to contain militancy in its Caucasus region before it hosts the Winter Olympics near there next February. Dzhamaleil Mutaliyev, a senior figure in a group fighting to establish an Islamist state, was killed along with another militant in a shootout in the town of Nazran in Ingushetia, a spokesman for local investigators said. ...