A new book is out, which may be worth checking out for those interested in the intersections between politics, eschatology, and religious currents of late antiquity:
Stephen J. Shoemaker, The Apocalypse of Empire: Imperial Eschatology in Late Antiquity and Early Islam. Philadelphia: University of Pennsylvania Press, 2018.
The book concentrates on Islam, but Islam contextualised in the late-antique eastern mediterranean, continuing the recent, and very valuable trend of considering early Islam in its natural environment. A very positive review of the book by Joseph Lipp can be read here.