The worry is squarely on the aristocracy who lovingly pass it on to us, you see if the Commonwealth nations/UN permanent council no longer have the wonderfully pointless non-conflict of Nuclear weapons in their arsenal as a "deterrent", they can no longer push the rest of the world around so easily.
Every time START occurs, it just reminds me of how anally retentive it all is, especially when they never cut it too much, just a nice reminder to the rest of the world that the US and Russia can easily switch off a few of their nukes, yet still capable of total annihilation, total façade.
Of course that isnt the worst problem of rather "disadvantaged nations" getting these weapons, it just happens to be a reason why the latter will (yes WILL) happen.
Nuclear terrorism, its been in the air since the Cold war ended and Russia destabilising causing multiple losses of Nuclear material because the workers needed the money.
Of course it seems nothing ever came of that (from what we see in the public eye anyway), of course everyone knows it will eventually occur, it is like a curiosity that simply needs to be quenched, more so than Nagasaki/Hiroshima.
The term deterrent quickly becomes redundant in the face of this immediate and constant threat, of course when it is a constant threat it just means that we are most definitely on a time limit, probabilities are fun like that.
Unfortunately I believe we are in the century for this to occur, where and when are simply up to a numbers game.
I must explain what i mean by curiosity, i mean the entire population of the species curiosity, it may seem rather macabre, but who could say that they never thought about what would occur of it did happen... that is a dark desire simply for satiation of the mind.
I am believer in destiny in this form, you keep thinking something is going to occur, it likely will.
Of course if we just ignored it completely (impossible, but whatever), it would likely still occur.
/Rambling on i suppose.