Jamal Afridi of the "realist" (read: diplomatic establishment) Council on Foreign Relations pens an analysis of Pakistan's relationship with China.

Will the sharp upturn in relations between the USA and India, begun under President Bush, prompt Pakistan to push for even closer ties with Beijing? Pakistan certainly values its relationship with China, but like most large-small relationships, the value isn't fully reciprocated. After the Uighur protests, China is growing more concerned about Pakistan's locus as a center of gravity for Islamonazis, and worry that more Uighurs could begin finding their way there. So there's a bunch of complicating concerns and interests. Most interesting passage:

"China is well aware of the threat it faces if it becomes too involved in counterterrorism efforts within Pakistan," says Garver, "and that means taking a more cautious and calculated approach--at least publicly--in strengthening Pakistan's secular institutions against the Islamist challenge. This may partly explain why China has been quite comfortable in encouraging the United States to engage more with Pakistan: to take the heat off of China."