Iran is selling into black market. their economy is in big trouble. they are involved heavily in 3 wars of region, Syria, Iraq and Yemen. They pay for most of Syrian war, including $600/month to each mercenaries from Pakistan, Afghanistan and Iraq. They are facing to increasing protests and uprising in home due to economic problems. it is getting worse everyday. They have around 350-450 protests every month. They have to manage the situation. Their major income (not including drugs and human trafficking) is oil. Everybody knows in the region that they are selling more than they announce. Then you will see that non of these will work at the end. They talk and break.