"On War", the posthumously published musings of General Carl Philipp Gottlieb von Clausewitz, a Prussian soldier who fought against Napoleon and who died over 160 years ago, still is actively cited in doctrinal perspectives on conflict. Stephen L. Melton postulates in his book "The Clausewitz Delusion" that around the 1980's Clausewitz' encroached on the prior successful military tradition and experience of the United States, causing a decline in the evaluation, study, and learning from our own experiences in favor of his.
The post World War II nationbuilding accomplished by George C. Marshall in Europe and Douglas MacArthur in Japan fed a hungry citizenry, restored economic and political stability, and resulted in durable relationships between former enemies. This was accomplished through the work of skilled military and civilian government employees specifically targeting such outcomes.
Are we the same kind of government and employees today, in desiring such outcomes, historically aware of prior circumstances ad actions that led to either success or failure, staffed and trained to execute the successful tasks and techniques, and structured and resolved to accomplish nationbuilding?