We Cannot Save Pakistan
When neither a society nor its military can muster the will to identify and fight, as a nation, a lethal enemy among them, it's over. Such is the condition in Pakistan. Pakistan, as a nation-state, is on a rapid path to implosion, disintegration and then explosion.
In short, it matters little what we do with them, what we do for them, what we give them, or what kinds of support we lend Islamabad. Unless and until the fragmented Pakistani society can uniformly identify the Taliban and al-Qaeda terrorists, no matter their heritage, as mortal enemies; and unless and until the Pakistani military can acknowledge this and muster the will to fight them and fight for the diverse society as a Pakistani nation, neither will survive.
And the above conditions seem not in the cards. And anointing Nawaz Sharif (ahem) Prime Minister once again may forestall or delay the al-Qaeda-induced and self-enabled fall of Pakistan, but it most certainly will not prevent it.
I could write a lengthy and heady analysis of the myriad conditions and complexities defining the dismal state of affairs and bleak outlook. But there you have it in a nutshell. For another succinct nutshell with the same conclusions, see John Robb.
A nation that will not save itself cannot be saved. We will simply have to adjust. And with much alacrity and urgency.