A ubiquitous feature of all magnetospheres is the presence of magnetic field and plasma. Their spatial and temporal variations can be addressed in terms of the electromagnetic coupling between one region of the magnetosphere and another.Outstanding issues of electromagnetic processes in the magnetosphere from the global viewpoint were revisited early this year at the Chapman Conference on Magnetospheric Current Systems. The conference emphasized interregional processes, such as the coupling between the magnetosphere and ionosphere, and driving sources of currents, such as the solar‐wind driven dynamo at the magnetopause.