Iran nuclear deal 'a very hard sell' as Congress doubts agreement

Mitch McConnell and other US congressional leaders speak out as deadline closes in and world powers join John Kerry for marathon talks in Vienna Senate majority leader Mitch McConnell and other congressional leaders on Sunday expressed doubts about the prospect of Congress signing off on a historic agreement with Iran to address that country's nuclear programme. Related: John Kerry 'hopeful' of Iran deal as nuclear talks reach decisive phase