On this week's episode, host Suzanne Lynch in Brussels speaks with Karl Mathiesen, POLITICO's senior climate correspondent, at the COP27 climate conference in Sharm El-Sheikh, Egypt. And we discuss whether we are entering a new Cold War with historian and author Professor Mary Sarotte.

Karl explains the goals of the ongoing U.N. climate diplomacy jamboree and the impact geopolitics is having on achieving global climate targets. We also hear exclusively from Alok Sharma, the U.K.'s COP26 president, about his role in climate policy over the years and what he sees as the biggest threats to climate progress.

Our special guest is Professor Mary Sarotte, whose latest book "Not One Inch: America, Russia, and the Making of Post-Cold War Stalemate," explores the geopolitical tensions between NATO, Russia and the United States. The historian speaks with POLITICO's Matthew Karnitschnig in Berlin where she's currently based as a fellow at the American Academy in Berlin.

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