This Journal Club represent Part II of an earlier talk (26 Jan 07) on the "Epistemological and pedagogical questions concerning electromagnetism". Maxwell's perhaps greatest accomplishment was the development of a theory in which several seemingly disparate phenomena of "action-at-a-distance" between electric charges were unified into a picture of "local action" between charges/currents and the electromagnetic field. The local action concept is expressed in the form of a set of differential relations, the Maxwell equations; the action-at-a-distance view is represented in the form of integrals. Both descriptions are mathematically equivalent and they are valid both in relativistic and quantum domains. I will discuss some epistemological, pedagogical and practical implications of these forms, first by analyzing the transition from static to dynamic potentials and the required additional fundamental principles. Then I will discuss two extreme cases: (i) a system of one charge under the action of externally controlled "free" charges and currents, and (ii) a collective system of charges under each others' influences (e.g., a collisionless plasma). Several questions will be addressed, such as "Which are more physical: the charges, the fields or their potentials?"; "Is local reconnection the cause or the consequence of an integral process?"; "What is the cause of magnetospheric field 'dipolarization'?".