One hundred years ago this week, the Ottoman Caliphate was formally abolished by a decree of the nascent Republic of Turkey’s National Assembly. In this week’s episode of The Lede, New Lines’ Faisal Al Yafai talks to Professor Ryan Gingeras of the Naval Postgraduate School in California, whose book “The Last Days of the Ottoman Empire” tells the story of the caliphate’s final years. Further listening:The Last Days of the Ottomans — With Eugene RoganImperial Folly After the Ottomans — With James BarrThe Rise of the House of Osman — With Marc David Baer For more information go to newlinesmag.com/podcast