NO LONGER A HIDDEN WAR: RECENT WRITINGS ON THE ERITREAN NATIONALIST STRUGGLE Eritrea: the unfinished revolution by Richard Sherman New York, Praeger, 1980. Pp. xix + 197. £13.00. Eritrea: Africa's longest war by David Pool London, Anti-Slavery Society, 1980. Pp. 78. £1.50. Behind the War in Eritrea edited by Basil Davidson, Lionel Cliffe, and Bereket Habte Selassie Nottingham, Spokesman, 1980. Pp. 150. £3.50. Conflict and Intervention in the Horn of Africa by Bereket Habte Selassie New York and London, Monthly Review Press. Pp. x + 211. £8.00.