Moving Train

Instead of moving nuclear material in armored, well-defended convoys, [Pakistan’s Strategic Plans Division] prefers to move material by subterfuge, in civilian-style vehicles without noticeable defenses, in the regular flow of traffic. according to both Pakistani and American sources, vans with a modest security profile are sometimes the preferred conveyance. and according to a senior U.S. intelligence official, the Pakistanis have begun using this low-security method to transfer not merely the “de-mated” component nuclear parts but “mated” nuclear weapons.