A train passes an overturned train carriage that was derailed by a bomb near the village of Malaya Vishera in the Novgorod region, about 500 km (311 miles) northwest of Moscow, August 14, 2007. Russia launched a terrorism investigation on Tuesday after a bomb derailed an express train between Moscow and St Petersburg, overturning carriages and injuring dozens of passengers, officials said. REUTERS/Denis Sinyakov (RUSSIA)