From another website:
The Russian government's statements on this matter have been contradictory. First they denied that such weapons had ever existed; then they said that all of them had been destroyed. However, the highest-ranking GRU defector Stanislav Lunev confirmed that such Russian-made devices do exist and described them in more detail [2]. These devices, �identified as RA-115s (or RA-115-01s for submersible weapons)� weigh from fifty to sixty pounds. They can last for many years if wired to an electric source. �In case there is a loss of power, there is a battery backup. If the battery runs low, the weapon has a transmitter that sends a coded message � either by satellite or directly to a GRU post at a Russian embassy or consulate.� According to Lunev, the number of �missing� nuclear devices (as found by General Lebed) �is almost identical to the number of strategic targets upon which those bombs would be used�. He suggested that they might be already deployed by the GRU operatives.
We can argue whether or not you believe in them jake. May I make a suggestion? Get first hand experience of things you try to rubbish, not from your 'chattering classes' viewpoint