“…The desire to prevent the emergence of new nuclear powers was present already at the time of negotiation of the NPT (Popp et al, 2017;Shaker, 1980), particularly for the United States. The very idea of the non-proliferation regime has been very strongly supported by the successive American administrations, and the United States has successfully used sanctions to oppose the emergence of new nuclear powers (Gavin, 2015;Miller, 2014). Even countries like France, once paying little attention to the risks of nuclear proliferation, over time have become extremely concerned with such risks and have become very strong promotors of non-proliferation norms (Pouponneau and Mérand, 2017).…”