The negotiations are likely pay for play to a certain extent. Whatever deal there is was made privately through letters back and forth directly from our fearless leader. The dog and pony show is to get the rest on board and find a way to sell the snake oil. Remember this admin has already released billions of dollars to Iran with more on the table. Here's an old article about the billion from last year.

[link to freebeacon.com]

If you want some real fun, take a look at the spin by this pro-iranian rag.
[link to payvand.com]