As tweeted by Greg Leichty @CuriousGreg (posted with his permission - thanks, Greg!)
You are a craven twit. The JCPOA was not designed to limit to do the things you fault it for. The JCPOA limits Iran from pursuing nuclear weapons. Complaining that a sports car does not get mileage like a Prius is a an assault upon common sense.
The actions of you and POTUS have undermined the very basis for achieving a deal with North Korea. Why would North Korea denuclearize when the word of the U.S. is worth nothing.
The United States has stomped on the desires and wishes of our allies who negotiated the agreement with us and is setting back U.S. relations with France, Britain and Germany. Why should they cooperate with us in future diplomatic efforts, when their wishes count for nothing?
If you have problems with Iran, then you expand upon what you already have, you don't shred the first step of cooperation, because the first step was not sufficient for you. First steps are first steps.