It was The New York Times which blew the whistle, quoting intelligence officials who alleged that Pakistan was a major supplier of critical equipment to North Korea’s N-weapons programme. The equipment, which may have included gas centrifuges used to create weapons-grade uranium (the other N-weapon type is plutonium-based), appears to have been part of a barter deal begun in the late ’90s in which North Korea supplied Pakistan with the missiles to counter India’s nuclear arsenal. "What you have here," said an US official familiar with the intelligence, "is a perfect meeting of interests. The North had what the Pakistanis needed, and the Pakistanis had a way for Kim Jong Il to restart a nuclear programme we had stopped."