In an ultimate military showdown the only thing that matters is nuclear throw-weight and quality.
Armies, navies, supplies, wealth...none of that matters when the balloon goes up.
My ranking of various nuclear powers throw-weigh and quality is thus.
Russia
USA
Israel
France
Britain
India
Pakistan
N.Korea
.
.
.
Iran (way at the bottom)
Russia
USA
China
Israel
France
Britain
India
Pakistan
N.Korea
Good grief! I left off China.... wish it could be left off the list.