The end of the War of Independence in Dublin was a strange thing: Even on the very day a truce was being negotiated, the IRA was planning a spectacular. But were they capable of doing it? Who was Margaret Keogh, the Cumann na mBan activist killed at the very end of the conflict? And what was different about Dublin in 1921? My guest is Pádraig Óg Ó Ruairc, author of a study of the Truce.