The call lasted five minutes , ' Rice tells CNN . `` While there will surely be important obstacles to moving forward and success is by no means guaranteed She characterized it as ` ` cordial and constructive '' Rouhani 's tweets are topics of conversation , White House official said . He tweets the conversation about nuclear weapons .
The call lasted five minutes , ' Rice tells CNN . She characterized it as ` ` cordial and constructive '' Rouhani 's tweets are topics of conversation , White House official said . He tweets the conversation about nuclear weapons .