Exclusive - Russia refusing to send some rail freight to Latvia: sources

By Gleb Stolyarov, Natalia Chumakova and Gederts GelzisMOSCOW/RIGA (Reuters) - Russia's state-owned railway monopoly is refusing most requests to take cargo from Russia to ports in Latvia, industry executives said, a serious blow to the Baltic state which depends on the transit trade.The monopoly, Russian Railways (RZhD), has in many cases offered no explanation to customers for turning down the cargoes, mostly oil products, fertiliser, coal and metals which had previously been transported relat