MOSCOW - Russia's Nord Stream 2 natural gas pipeline is ready for operation amid an energy crunch in Europe, Alexei Miller, the CEO of Russia's gas industry giant Gazprom, reported to President Vladimir Putin during a meeting on Wednesday. Gazprom has completed filling the second string of the Nord Stream 2 pipeline with gas, and both strings with sufficient pressure are fully ready for use, Miller said. "Now, of course, everything depends on our partners, consumers in Europe. As so...