Many people I know ask, ‘Why not allow Iran to have nuclear weapons? After all, Israel, the US etc. have them, right?’ the answer of course is the ‘bully’ factor. Since N. Korea developed even crappy nukes, they have upped their level of geopolitical belligerence quite a bit, sinking a South Korean naval vessel killing over 40 sailors in peace time and firing artillery at a South Korean Island, both incidents without warning or causus-Belli, although arguably creating one.
Most recently NORK warned the world that any attempt to interfere with the launch of what is clearly an ICBM, and likely a catastrophically dangerous one as it’s chances of hitting nearly anyone other than its actual target is close to 100%, would result in horrific consequences, clearly implying the use of a multi-kiloton nuclear device.
This warning was extended to include ‘anyone attempting to recover parts of this multi-stage launch vehicle as well.
It stands to reason that Iran with it’s degree of ideological zealotry at least equal to North Korea’s would be as problematic for the world and given its proximity to what remains a top level strategic resource repository of the world, considerably more.