Here is the full text of the Iran nuclear deal. The "E3/EU+3" is a reference to the world powers that negotiated the deal with Iran (three European Union states of UK, France, and Germany, plus three others of China, the US, and Russia). A lot of the text is highly technical, but it's still surprisingly readable for an international arms control agreement that was hammered out in many past-midnight sessions.
Here's the full text of the Iran nuclear deal
By Max Fisher