The Irish Revolution was a pivotal moment of transition for Ireland, the United Kingdom, and British Empire. A constitutional crisis that crystallised in 1912 electrified opinion in Ireland whilst dividing politics at Westminster. Instead of settling these differences, the advent of the First World War led to the emergence of new antagonisms. Republican insurrection was followed by a struggle for independence along with the partition of the island. This volume assembles some of the key contributions to the intellectual debates that took place in the midst of these changes and displays the vital ideas developed by the men and women who made the Irish Revolution, as well as those who opposed it. Through these fundamental texts, we see Irish experiences in comparative European and international contexts, and how the revolution challenged the durability of Britain as a global power.