In the 1920s, hard-line Zionists developed the doctrine of the Iron Wall: negotiations with the Arabs must always be from a position of military strength. This doctrine, argues Avi Shlaim, became central to Israeli policy; dissenters were marginalized and many opportunities lost. Drawing on a great deal of new material and interviews with many key participants, Shlaim places Israel's political and military actions under an uncompromising lens. The result is a fresh and informed account of one of the world's most intractable conflicts of modern times.