On Friday, negotiators from Russia and Ukraine met in Istanbul, Türkiye, in the first direct peace talks between the two sides in over three years. With the road to peace still looking difficult, Peter Zalmayev, director of the Eurasia Democracy Initiative, and Professor Jeffrey Sachs from Columbia University clash fiercely: Is Russia's demand to block NATO membership a reasonable call for Ukraine's peace? This heated debate mirrors the uncertainty gripping today's negotiations. Click and watch the debate.