America and the world: Foreign policy challenges for Biden-Harris

After four years of a foreign policy roughly summarised as "America First", a change is expected. Almost immediately, US president-elect Joe Biden signalled an imminent return to the Paris climate accord, the one President Donald Trump pulled out of almost as soon as he was elected. Will there be a similar move on, for instance, the Iran nuclear deal? Will there be a review of the decision to cut financial support to the Gaza Strip? How will the Biden-Harris ticket recalibrate the global influence of the United States? We explore all these issues with our guests.