Today, the world may face some surprises due a number of emerging technological advances that could significantly lower the barriers to the development of nuclear arms.
In particular, additive manufacturing of machine parts, such as those needed for uranium-enrichment centrifuges and missile engines—and the use of lasers to enrich uranium may create new pathways to more-rapid development of nuclear weapons and the systems necessary for their delivery.
It may only be a few years, if that, before additive manufacturing is widely adopted. Although laser enrichment has not been commercialized, it may be adapted before long for enriching uranium on the smaller scale needed for a nuclear weapons program.
