The world reaches Iran nuclear deal.

[I and I]

For some reason the west didn't like Iran starting nuclear energy plants, so the west through its irrational fear thought they had to reach some deal with Iran. A deal has been reached and agrees to by all major powers in the world. Only one country is against this deal...

What are your thoughts on this historic deal?

"For some reason" really?
Iran is a fundamentalist Islamic regime with a history of long bloody wars of aggression and an expansionist agenda.
The kind of nuclear power they were developing would have yielded nuclear weapon capabilities.

I highly doubt that the facilities used to produce nuclear energy can be used and be used to produce nuclear weapons. Iran was already a signature of the nuclear non proliferation treaty which comes with inspections of their own.

Iran is building nuclear power facilities for energy purposes.

Iran doesn't have a history of aggressive wars, unless you go back hundreds of years.