One question I haven't seen an answer to yet: if this thing had been loaded with the maximum available warheads, although they presumably wouldn't have detonated, how large an area would have been contaminated with how much radioactive material from their rapid unscheduled disassembly? The Russian nuclear arsenal may be a bigger threat to the Russians than the people they want to attack, even without taking the possibility of wind blowing fallout from a successful strike back into Russia into account. Not that Putin cares.