[jammer]

Yes. Good point and my mistake.

[ovrtaxt]

On the Chechen bomb in the Moscow park:The bomb was made of cesium-137, and, if detonated, would have killed thousands of Russians. This incident represented the first case of a nuke to be deployed as a weapon of terror.

According to this article , that was a dirty bomb if it was a bomb at all, not a real nuke. In fact, it makes no mention of explosives, just a canister of Cesium 137.

As for real tactical nukes, it says this:

After the USSR broke apart, then Vice President Aleksandr Rutskoi noted that some tactical nuclear weapons were missing but never said what had happened to them. In September 1993 Moscow News reported that the Chechen republic had paraded SS-20 missiles at a military review in Grozny. The SS-20 is a solid fuel, mobile missile system with a range of 5 to 9,500 kilometers and capable of launching a powerful nuclear charged warhead. All were supposedly destoyed under the INF Treaty. All the missiles of this class have probably been destroyed. However, there were many SS-20 models for crew training. One of the models, allegedly written off, could have gotten into the hands of Chechenya. The Kapustin Yar launching site is situated, like Chechnya, in the North Caucasian military district.