Putin's spokesman Dmitry Peskov says they'll call off the invasion if Ukraine accepts being neutral and demilitarized, agrees to the permanent loss of Crimea, and recognizes the separatist pro-Russian regions in the east. Russia's demands come as its forces continue to pound Ukrainian cities. We speak to the mayor of Mykolaiv, Oleksandr Syenkevych. Also joining the show: US Ambassador to NATO Julianne Smith, Ukrainian novelist Andrey Kurkov, and environmentalist Bill McKibben.To learn more about how CNN protects listener privacy, visit cnn.com/privacy