was at the origin of the rethinking of the traditional doctrine known as 'mutual assured destruction' (MAD, in its English acronym), which was the basis for nuclear deterrence. According to this theory, two blocs capable of inflicting upon each other irreparable damages would cause leaders to hesitate to unleash the nuclear fire. For Wohlstetter and his pupils, MAD was both immoral -- because of the destruction inflicted on civilian populations -- and ineffective: it led to the mutual neutralization of nuclear arsenals. No statesman endowed with reason, and in any case no American president, would decide on 'reciprocal suicide.' Wohlstetter proposed on the contrary a 'graduated deterrence,' i.e. the acceptance of limited wars, possibly using tactical nuclear arms, together with 'smart' precision-guided weapons capable of hitting the enemy's military apparatus. He criticized the politics of nuclear arms limitations conducted together with Moscow. It amounted, according to him, to constraining the technological creativity of the United States in order to maintain an artificial equilibrium with the USSR.