Iran Nuclear Deal

"Under this agreement, however, Iran will only be permitted to enrich uranium with 5060 IR-1 machines at Natanz, which means the P-5+1 has frozen Iran’s enrichment program at existing levels for the next ten years.  Not only are the IR-1 centrifuges woefully out of date and prone to high failure rates, Iran has been using these machines for almost a full decade.  In other words, it has nothing further to learn from continued enrichment with this technology, and the next decade becomes a “lost decade” when it comes to the modernization of Iran’s enrichment program." (source)