Concerning Missiles
The 2010 agreement said “shall not”
The 2015 agreement said “called upon to not”
That language was weakened by the other signatories of the agreement, not the Obama administration. President Obama at the end of the day accepted the weakened language because having in place the reduction in capacity of manufacturing weapons grade nuclear material was much more important.
The Iranians took that to be weakening of the former agreement and that they did not break it.
The primary concern of the agreement was to restrict the development of nuclear weapons in the Middle East and specifically Iran. If President Trump did not like the weakening of the language surrounding the testing of ballistic missiles I do not see how, like the TPP, blowing it up with no plan to replace it with something “better” is achieving that goal.
So when Iran starts to manufacture weapons grade material again and the clock is ticking for about a year before they start to test out their bombs… what happens?