agreement over iran's nuclear program. i reiterated to president rouhani what i said in new york. while there will surely be important obstacles to moving forward and success is by no means guaranteed, i believe we can reach a comprehensive solution. now, we're mindful of all the challenges ahead. the very fact that this was the first communication between an american and iranian president since 1979 underscores the deep mistrust between our countries, but it also indicates the prospect of moving beyond that difficult history. >> president obama said both men have directed their teams to work quickly to pursue an agreement. after the call ended, rouhani's twitter account lit up. a picture was posted of rouhani on his plane describing the call as historic. and then a message saying obama, rouhani agreed ground should be prepared for solving of other issues including regional