Against a backdrop of moderate gains and terrible defeats, Un laments socialism’s failure to deliver formerly colonized peoples out of imperialism’s terrible grasp. Drawing on the US War on Terror and the disappearances of people extrajudicially apprehended from the Middle East and North Africa, this collection of poetry interrogates the subjectivity of Western revolutionary socialism in the early twenty-first century. Absence, negation, and unbeing echo throughout the text: the negativity of a global class struggle now forty years in retreat. But because Un’s philosophical method is dialectical, negation does not mean hopelessness or final defeat. Instead, Un hints at new revolutionary possibilities – the emergence of old, tidal syntheses – through the combination of historical difficulty with the arrival of unknown days ahead.