Berdymukhamedov gives Cautious Backing to TransCaspian

    Turkmenistan's president told a US envoy that a pipeline under the Caspian Sea is one possibility for exporting Turkmen natural gas, state-run media reported Tuesday, giving what appeared to be only cautious backing to the US-backed proposal.     Gurbanguly Berdymukhammedov made the comments Monday while meeting with Deputy Assistant Secretary of State...