NIEs are considered to be "estimative" products, in that they present what intelligence analysts estimate may be the course of future events. Coordination of NIEs involves not only trying to resolve any inter-agency differences, but also assigning confidence levels to the key judgments and rigorously evaluating the sourcing for them. Each NIE is reviewed and approved for dissemination by the National Intelligence Board (NIB), which comprises the DNI and other senior leaders within the Intelligence Community.