[CarrotAndStick]

I thought I had read somewhere Ukraine and Kazakhstan still have a dozen or so. Remember, nuclear bombs have a shelf-life, and their components must be restored to very exacting specifications. The terrorists might not have equipment to do it... yet.

[Cheburashka]

All the former Soviet Republics have signed the Nuclear Non-proliferation Treaty. When you sign you must declare yourself either a Nuclear Weapons State or a Non-nuclear Weapons State. You are treated differently under the treaty depending on which type of declaration you make.

Of the former Soviet republics, only Russia has declared itself a Nuclear Weapon State.

If either Kazakhstan or Ukraine had nuclear weapons they would be violating the treaty. While we are all adults here and realize that sometimes countries violate treaties they sign, in this case it seems very unlikely.