Moscow and Beijing will soon sign a deal on delivery of "50 billion cubic metres of gas" per year via Power of Siberia 2 pipeline, which will run partly via Mongolia, says Energy Minister Alexander Novak.A Russian pipeline to China will replace the Nord Stream 2 gas link to Europe, abandoned amid the Ukraine conflict, Moscow's Energy Minister Alexander Novak has said.Asked in an interview with Russian television channel Rossiya-1 on Thursday if Russia would replace the European Nord Stream 2 with the Asian Power of Siberia 2, Novak said: "Yes."