Making promises before the other side has actually agreed - Art of the deal.

I'm not saying Iran is using Donnie's premature promise yesterday, of a GRAND, GREAT, THE BEST, MOST AMAZING, LONGEST LASTING Deal, against him, now pushing for even more concessions, as they know he needs a deal done and signed before market open on tuesday... But If they were, it might look like this.

Disclaimer, don't listen to me, I am heavily biased from long oil exposure.