Washington often acts as if Pakistan were its client state, with no other possible patron but the United States. It assumes that Pakistani leaders, having made all the usual declarations about upholding the "sacred sovereignty" of their country, will end up yielding to periodic American demands, including those for a free hand in staging drone attacks in its tribal lands bordering Afghanistan. This is a flawed assessment of Washington's long, tortuous relationship with Islamabad.
A recurring feature of the Obama administration's foreign policy has been its failure to properly measure the strengths (as well as weaknesses) of its challengers, major or minor, as well as its friends, steadfast or fickle. To earlier examples of this phenomenon, one may now add Pakistan.
That country has an active partnership with another major power, potentially a viable substitute for the US should relations with the Obama administration continue to deteriorate.