If candidate Biden wins the presidential election will his approach to Afghanistan be all that different from President Trump's? Will he try to breathe life back into the Iran nuclear deal? Will he advocate for the Palestinians in a way that the Trump administration has not? And would he be able to revive America's image in the Middle East as being an "honest broker" (or was that perception ever really there in the first place?).

Anne-Marie Slaughter, who served as a top State Department official under President Obama, takes on all those questions in a lively interview with Ian Bremmer. The conversation was part of the latest episode of GZERO World. The episode begins airing nationally in the US on public television this Friday, October 23. Check local listings.