evidence: In May 1992 meetings with then-U.S. president George H.W. Bush, the president of the newly independent former Soviet republic, Nursultan Nazarbayev, had committed Kazakhstan to a non-nuclear future and the removal of more than 1,000 former Soviet nuclear warheads still on Kazakh territory. Earlier, in August 1991, Nazarbayev (then the head of the Kazakh Communist Party) had decreed the closure of the Semipalatinsk test site, thus signaling his agreement with the popular Nevada-Semey movement that protested the human and environmental damage from decades of nuclear tests. [...] Other conference sessions covered the landmark decisions made by the Kazakh leadership in the early 1990s to join the Nuclear Non-Proliferation Treaty and remove the nuclear, chemical and biological weapons and infrastructure left by the Soviet Union. Specific topics included the Project Sapphire removal of enough highly-enriched uranium to make a score of nuclear weapons, the decommissioning of the Soviet-era BN-350 reactor with secure storage of the downgraded fuel on the territory of the former test site, and the challenges of cleanup at the Stepnogorsk anthrax factory and the Vozrozhdeniye Island bioweapons test site.