Your statement:

"As for Iran being on the disarmament commission, there's an Arab saying that goes something like "better to have your enemy in your tent.""

Does not apply and is flawed. In the above statement, it is you who is watching your enemy. In the case of the UN, it is truly the "Fox guarding the hen house" -- the Fox (Iraq) is not being being watched by other Foxes or Dogs to ensure that they do not eat the hens.