This was perhaps the first time that a senior US official has openly flagged China as the US's rival in the energy politics of Central Asia. US experts usually have focused attention on Russian dominance of the region's energy scene and worked for diminishing the Russian presence in the post-Soviet space by canvassing support for Trans-Caspian projects that bypassed Russian territory. In fact, some American experts on the region even argued that China was a potential US ally for isolating Russia.
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China has the huge advantage of financial muscle. It can simply outspend the US or European countries. Short of stoking the fires of militancy and ethnic unrest in Xinjiang, the US may have run out of options to disrupt China's emerging leadership in Central Asia. On its part, Beijing knows that the stability of Xinjiang is crucial for China's Central Asia policy - and vice versa. The two have become inextricably linked in the Chinese regional strategy. Beijing knows that "foreign devils on the Silk Road" - militant groups with foreign backers - can harass China by blowing up long stretches of the pipelines which are impractical for Beijing to protect in Xinjiang's vast mountains and deserts. That is one solid reason why Beijing has not been taken in by the US overtures for cooperation in Afghanistan nor is enamored by Obama's standing invitation to step into South Asia as the arbiter of peace and regional security.