His cable, released by WikiLeaks, followed statements by the then prime minister of Ukraine, Yulia Tymoshenko, to the BBC that she had "documented proof that some powerful criminal structures are behind the RosUkrEnergo (RUE) company". Allegations have long swirled that the Russian crime don Semyon Mogilevich had covert interests in Swiss-registered RUE, which distributes gas from central Asia. A