Does the Republican base trust Trump on Iran?
Whether congressional Republicans come around on the emerging deal to end the Iran war may hinge on whether the GOP base continues to trust President Donald Trump on the issue as his approach shifts from military force to diplomacy.

TL;DR
- Congressional Republican support for a potential Iran war deal may depend on GOP base trust in President Donald Trump.
- Trump's approach to the issue is shifting from military force to diplomacy.
- The base's continued trust will be a key factor in Republican decisions.