Why so confused? Iran doesn't rescind it's obligation because this would mean the end of any even apparent legitimacy of its nuclear program. And besides: it says a lot abouth your confusion the fact that you don't seem able to differentiate between Iran and Israel or India.
UN: Gaza could be 'uninhabitable' by 2020 if trends continue (AP)
from the article: IAEA will not tie Israel's nuclear program with Iran, sources say