Gazprom will invest $8.8 billion through 2017 in a giant gas pipeline to China, an executive at the state-owned gas company said Thursday, news agency RIA Novosti reported. The 4,000-kilometer pipeline, called the "Power of Siberia," will carry Russian gas to China under a 30-year gas supply contract worth some $400 billion signed last May. The deal was touted as evidence of a push by Moscow to boost relations with Asia.