"We estimate that Pakistan now has a nuclear weapons stockpile of approximately 170 warheads. The US Defense Intelligence Agency projected in 1999 that Pakistan would have 60 to 80 warheads by 2020, but several new weapon systems have been fielded and developed since then, which leads us to a higher estimate," the Nuclear Notebook column published in the Bulletin of the Atomic Scientists on September 11 said.
In a presentation obtained by Danger Room from wired.com, Randy Jones, the associate technical director of the Defence Intelligence Agency's Missile & Space Intelligence Centre, warned that terror groups could use lasers, radio frequency jammers, and even nuclear weapons to knock out US satellites.
"We estimate that Pakistan now has a nuclear weapons stockpile of 130-140 warheads. This stockpile exceeds the projection made by the US Defense Intelligence Agency in 1999 that Pakistan by 2020 would have 60-80 warheads," said the report released last month.