U.S. may impose new sanctions before Biden takes office

Joe Biden says he wants the U.S. to return to the nuclear deal that was signed with Iran when he was vice president. But there are claims that President Donald Trump wants to sabotage that through more sanctions. What hurdles will Biden have to overcome if he is to salvage the nuclear deal? Mostafa Khosh-cheshm, a political analyst and commentator in Tehran shared his insights.