In the face of the destructiveness of the new weapons and in anticipation of the nuclear arms race several project members including Bohr, Bush and Conant expressed the view that it was necessary to reach agreement on international control of nuclear research and atomic weapons.
Tras divisar o poder destrutivo destas novas armas e anticipando unha carreira de armamento nuclear, varios dos membros do proxecto, incluíndo a Bohr, Bush e Conant, expresaron a opinión de que era necesario chegar a un acordo sobre o control internacional da investigación nuclear e das armas nucleares.