BENGHAZI, Libya — A Kremlin envoy arrived in the rebel-held city of Benghazi on Tuesday to bridge the rift in Libya, stepping up Kremlin efforts to play a prominent role in resolving the conflict. “Some are looking to Benghazi, some are looking to Tripoli. Russia sees its task as building a bridge between these two banks on which Libyan society now stands,” said Mikhail Margelov, President Dmitry Medvedev’s special envoy to Africa. […]