Given the report that it was the Red Mosque followers kidnapping of a bus-load of Chinese sex workers in Islamabad was "straw that broke the camel's back" and led to then President Musharraf's decision to use lethal force to "resolve" the occupation of the mosque - there is a history of Chinese matters having an impact on Pakistani decision-making.

I am sure historians would cite other incidents.

At the same time China has been reluctant to support Pakistan at times too.

One wonders how heavy a presence today in Pakistan is there of Chinese security & intelligence agencies?