Stephanie -- Israel has not signed the NPT (nor have India and Pakistan), thus (absent separate agreement) not under the jurisdiction of the IAEA
Iran, a signatory to the NPT, does keep pushing, evidently banking significantly on the reality that a shove back could and likely would prove very costly -- risky business
the world, the whole international community, as such, does have legitimate interest that these things not spread further, and for that matter, that these things ultimately cease to exist
it is clear that Iran keeps pushing
and that as it does, it becomes less and less inarguable that in this instance, at this point or some point near, a shove back could be appropriate and legitimate
risky business