Accepted features of the Kondratiev Cycle/Structure (KCS) or Kondratiev Phenomenon are summarized. Saturation and exhaustion characterizing the end of the stage of depression of the fourth Kondratiev are briefly discussed. Features that may delimit the emergence of a fifth Kondratiev are discussed. Assumptions and requirements for new conceptual models are presented. Multidimensionality in time and space in building these models is emphasized. Several relevant models in the physical, biological, and social sciences are reviewed. A new model is developed, and sources of possibly substantiating data are identified. Because historically the likelihood of insurrections and wars has increased as nations recover from depression into recovery and prosperity, features imminent to war are discussed. A number of policy recommendations relevant to improving societal and environmental conditions and avoiding war are made.