The world-wide increasing energy demand in general, and electricity demand in particular, call for a reevaluation of fission energy as a long-term energy source. In this context, a recent paper has investigated the extent to which nuclear energy is compatible with the goals of sustainable development, and how it can best contribute to them. Although present light water reactors (LWRs) are capable of covering the nuclear energy demand for many decades to come, there is a longerterm need for integrating advanced reactors, including breeder reactors, into the nuclear energy system. Important development goals for such advanced systems are environmental friendliness and resource efficiency, while accounting for sociopolitical concerns such as proliferation.