Which makes a difference to the point how...?
No, better question:
Which matters to you why?
Russia has over 1000 Nuclear missiles at its command, a possible 9000 warheads (with an average megatonnage of 10) to play with, add to that the 70 new ICBM's they MIGHT have, and you are worried about Iran possibly having A (singular) atomic bomb withing the next decade, worried about the PRK having a 0.5 (at best) megaton warhead they can't get off of the ground?
I get the feeling you are searching for a point of contention.
"So, it's defeat for you, is it? Someday I must meet a similar fate..."