Russia is poised to temporarily shut down the European Union’s single biggest piece of gas import infrastructure, stoking fears of a delayed or only partial return of gas supplies. Some fear the Kremlin could use planned maintenance works to turn off the taps for good. “If it doesn’t come back after maintenance because President Putin plays games or wants to hit Europe while it hurts, then the plan to fill up gas storage by the end of summer will probably not work,” said Eurasia Group’s Henning Gloystein.