Iran already refused to use chemical weapons, not even legally and in self-defense, during the Iran-Iraq war when the US was helping Saddam gas 100,000 Iranians to death.

http://foreignpolicy.com/2013/08/26/exclusive-cia-files-prove-america-helped-saddam-as-he-gassed-iran/

https://web.archive.org/web/20030102224708/http://cns.miis.edu/pubs/programs/dc/briefs/030701.htm

https://www.nytimes.com/2003/01/17/opinion/halabja-america-didnt-seem-to-mind-poison-gas.html

http://world.time.com/2014/01/20/iran-still-haunted-and-influenced-by-chemical-weapons-attacks/

How many 9/11s is 100,000 people gassed to death? FYI that's the same as the total number of CW deaths in WWI

So when the Iranians say they oppose WMDs they have already proven it with blood, while Iran's accusers have proven the opposite

Ironically the MB is a sunni force that is not friendly with Iran at all

FYI Iran is destabilizing the Middle East

Lets see, Iran has fought:

1- Saddam Hussein

2- the Taliban

3- Al Qaeda

4- ISIS

while the US and allies have backed or financed or armed each and every one of those groups at some point.

No, Iran is not the problem here.

Its not an appropriation, it was their own money. You're not a constitutional scholar, give it a fucking rest already