The Koran proves the US can’t trust deal with Iran’s Supreme Leader
You who believe, do not take the Jews and Christians as allies: they are allies only to each other. Anyone who takes them as an ally becomes one of them— God does not guide such wrongdoers.
— The Feast 51
The worst creatures in the sight of God are those who reject Him and will not believe; who, whenever you [Prophet] make a treaty with them, break it, for they have no fear of God. If you meet them in battle, make a fearsome example of them to those who come after them, so that they may take heed.
— Battle Gains 55:57
Read more here: Believe or Beware: Warnings From the Quran to Disbelievers