(Reuters) -Energy and metals firms led a jump in Russian stocks on Thursday as trading resumed after a month’s suspension, reflecting soaring global prices for oil, gas and other commodities on fears the Ukraine crisis will threaten supply. Stocks had not traded on Moscow’s bourse since Feb. 25, the day after President Vladimir Putin sent troops into neighbouring Ukraine, prompting Western sanctions aimed at isolating Russia economically and then Russian countermeasures. The reaction has cut off Russian financial markets from global networks and sent the rouble currency tumbling. Stocks had al…