Bobby Ghosh joins Christiane Amanpour to discuss this year's NATO summit and analyze tensions between Presidents Trump and Macron, then Gülnur Aybet explains President Erdogan's role in the situation. Shirin Neshat and Hadi Ghaemi unpack the significance of a new exhibition of female Iranian artists. Feras Fayyad tells Hari Sreenivasan about his new documentary "The Cave."