We all know that North Korea has nuclear weapons, and now potentially
a hydrogen bomb, and that Iran almost certainly has got a nuclear weapons
program, although they do deny that (see Iran's
Rouhani dismisses nuclear weapons fears). We in the west would rather
neither country have nuclear weapons.
Why should the US, Russia, China, etc have nuclear weapons but deny that
option to Iran and North Korea? What gives us the right to dictate who
has them and who doesn't?