It may only be a matter of time before the U.S. and Western allies impose full sanctions on Russia’s energy exports, analysts say, warning that such a move would have seismic repercussions for oil and gas markets and the world economy. It comes as Russia’s onslaught of key Ukrainian cities enters its second week, with fighting raging in the north, east and south of the country. Western sanctions imposed on Russia over the invasion have so far been carefully constructed to avoid directly hitting the country’s energy exports, although there are already signs the measures are inadvertently prompting banks and traders to ... (full story)