North Korea's Yongbyon freeze (1994)
The US and North Korea signed the Agreed Framework to freeze the Yongbyon gas-graphite reactor, the same design North Korean engineers later helped Syria copy at Al-Kibar, in exchange for aid and lighter-water reactors.
Yongbyon's plutonium work paused for several years.
The deal collapsed by 2002-2003 and North Korea went on to test nuclear weapons.
Shows the exact reactor lineage behind Al-Kibar and how such nonproliferation deals can unravel.
