Most of this information isn’t being released to the public. It is known that the entire Kazakhstan arsenal was left unguarded after the fall of the Soviet Union, and it was eventually secured by the US.
The official story that the Kazakhstani tell seems to be:
Kazakhstan followed this move with an even more historic initiative when we voluntarily renounced the world’s fourth largest nuclear arsenal, which we inherited on the break-up of the Soviet Union. No country has done more to bring the goals of the NPT closer.
US official history as retold by the Council of Foreign relations seems to be:
The former Soviet republics of Ukraine, Belarus, and Kazakhstan—where the Soviets based many of their nuclear warheads—safely returned their Soviet nuclear weapons to post-communist Russia in the 1990s, but all three countries still have stockpiles of weapons-grade uranium and plutonium.
How many nuclear weapons did get neutralized in that way?
Most of this information isn’t being released to the public. It is known that the entire Kazakhstan arsenal was left unguarded after the fall of the Soviet Union, and it was eventually secured by the US.
How do you know?
The official story that the Kazakhstani tell seems to be:
US official history as retold by the Council of Foreign relations seems to be: