Why does Pakistan need more nukes?

Members of Congress have been told in confidential briefings that Pakistan is rapidly adding to its nuclear arsenal even while racked by insurgency, raising questions on Capitol Hill about whether billions of dollars in proposed military aid might be diverted to Pakistan’s nuclear program....

Inside the Obama administration, some officials say, Pakistan’s drive to spend heavily on new nuclear arms has been a source of growing concern, because the country is producing more nuclear material at a time when Washington is increasingly focused on trying to assure the security of an arsenal of 80 to 100 weapons so that they will never fall into the hands of Islamic insurgents....

Bruce Riedel, the Brookings Institution scholar who served as the co-author of Mr. Obama’s review of Afghanistan-Pakistan strategy, reflected the administration’s concern in a recent interview, saying that Pakistan “has more terrorists per square mile than anyplace else on earth, and it has a nuclear weapons program that is growing faster than anyplace else on earth.” [NY Times]

Given that nukes are probably weapons to be used against India, which is really not the imminent threat that the Taliban is, why is Pakistan ramping up their nuclear capabilities? Scary stuff!