A Russian man has been charged with killing 13 fellow train passengers by offering them tranquilliser-laced drinks before robbing them and leaving them to die, investigators said Wednesday. The 23-year-old attacker targeted well-dressed, tipsy male travellers on commuter trains and at rail stations in Moscow and the surrounding region, Moscow transport investigators said in a statement. He gave them drinks laced with a "huge dose of a strong tranquilliser" and waited for them to black out, then stole their money, mobile phones and bank cards before leaving them in an unconscious state, the statement said. "Thirteen people died at the...