The stage is set. By now it's established Iran's Supreme Leader Ayatollah Khamenei has given full authority to the new administration of President Hassan Rouhani to talk directly to Washington about Iran's nuclear program.
This happened only a few days after US President Barack Obama leaked that letters had been exchanged between himself and Rouhani.
Rouhani's empowerment was first confirmed later last week by extremely credible former nuclear negotiator ambassador Seyed Hossein Mousavian in this op-ed published in Japan. Mousavian was Rouhani's deputy in Iran's Supreme National Security Council (SNSC) from 1997 to 2005. Then Rouhani himself expanded on it this Wednesday in an interview with NBC