Among the noted critics of Suvorov's work are Israeli historian Gabriel Gorodetsky, American military historian David Glantz,[37] and Russian military historians Makhmut Gareev, Lev Bezymensky, and Dmitri Volkogonov. Many other western scholars, such as Teddy J. Uldricks,[38] Derek Watson,[39] Hugh Ragsdale,[40] Roger Reese,[41] Stephen Blank,[42] and Robin Edmonds,[43] agree that the Suvorov's major weakness is "that the author does not reveal his sources" (Ingmar Oldberg[44]) and rely on circumstantial evidence.[45].