"Pakistan is the most dangerous country in the world — not this year, not next year, but certainly down the road," says Michael Morell, former acting CIA director.

The big picture: Pakistan has the world's 5th largest population, 5th largest military and 6th largest nuclear arsenal. The danger begins, Morell says, with a dysfunctional economy and a rapidly growing population of young people without education or job prospects. Add to that a military that continues to call the shots as though war could break out at any moment.

"The main reason the military has a grip on decision-making is because of a long-held and now mistaken belief in Pakistan that India is an existential threat to Pakistan and that Islamabad must do everything it can to protect itself from that threat," he says.

• "One of the areas in which this plays out is in Pakistan’s support to jihadists — in short, its support to terrorists fighting India. That support bleeds over to extremists who want to overthrow the Pakistani state itself, including al-Qaeda and the Pakistani Taliban."

The bottom line: "This anti-state jihadist extremism is growing in Pakistan, creating the nightmare society down the road — an extremist government in Islamabad with nuclear weapons."