Book Reviews : The Politics of Violence: Revolution in the Modern World. By CARL LEIDEN and KARL M. SCHMITT. (Englewood Cliffs: Prentice-Hall,1968. Pp. x,244. $5.95 cloth,$2.95 paper.)

Book Reviews : The Politics of Violence: Revolution in the Modern World. By CARL LEIDEN and KARL M. SCHMITT. (Englewood Cliffs: Prentice-Hall,1968. Pp. x,244. $5.95 cloth,$2.95 paper.)