Let the silly Iranians cry all they want, they're two faced liars who would stab anyone in the back the second they saw an advantage for them in doing so. I would have proffered Bush to have sorted Iran out whilst he was in office, but oh well.
The nuclear deal with India is totally different and can not even be compared with the situation in Iran.
Iran : A revolutionary supremacist regime that wants to kill innocent people (or at least that is how their leader talks). Hostile towards many countries and can not be trusted with nuclear power.
India : Mostly the complete opposite.
Even Iranian exiles who live in the west are a fanatic, but towards the left wing. Oh and their attitude towards people of the subcontinent is distasteful too.
Also, no matter how anti-US the Arabs get, they will still be more anti-Iran, as they sunni wahabis of Saudi are very weary of Shia Iran.