Russia halted all gas sales to the ex-Soviet nation in June.
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The European Union warned energy giant Russia on Tuesday not to use gas supplies as a weapon in its standoff with Ukraine over the fate of its neighbour’s separatist east.

EU Energy Commissioner Guenther Oettinger said he hoped to reach an “interim solution” with Russia over its three-month-long supply cut to Ukraine when the three sides meet for crunch talks in Berlin on Friday.