Tanker attacks near Persian Gulf raise concerns for China's growing dependence on liquefied natural gas.
Weakness in the power sector signals trouble in the economy.
Strategic reserves could last for as little as 30 days in case of a cutoff.
Central Asia's 'Line D' project may be delayed past 2022.
Government support for manufacturing raises generating costs.
State-owned companies face pressure from pipeline merger plan.
Investment growth fades, risking long-term effects.
Beijing's polar ambitions draw fire from Washington.
Analysts cite high costs and development risks.