Tom Ruys, Olivier Corten, and Alexandra Hofer (eds), The Use of Force in International Law. A Case-Based Approach. Oxford University Press, Oxford 2018, ISBN 9780198784364, ix + 960 pp., GBP 137.50/Tallinn Manual 2.0 on the International Law Applicable to Cyber Operations. General Editor Michael N Schmitt, Cambridge University Press, Cambridge, 2017, ISBN 9781316630372, xxxviii + 600 pp., GBP 105.00/Christine Chinkin and Mary Kaldor, International Law and New Wars. Cambridge University Press, Cambridge, 2017, ISBN 9781316759868, xv + 608 pp., GBP 32.99 (Paperback), GBP 93.99