The Department of State recently released newly declassified documents covering U.S. policy toward Vietnam, Laos, and Cambodia from January 1973-July 1975. At a State Department conference commemorating the release of these documents, diplomat, strategist, and Nobel laureate Henry Kissinger bemoaned the torment that consumed a generation of Americans as the conflict wore on. The insight Kissinger provides–possibly unintentional–underscores why assessments of war should go beyond critiques of its political and geostrategic ramifications; they should also extend to the various ways that war affects our society and public more generally.

In Kissinger’s somber assessment of America’s involvement in Southeast Asia, he said he regrets that what should have been straightforward disagreements over the U.S. approach to Vietnam became “transmuted into a moral issue – first about the moral adequacy of American foreign policy altogether and then into the moral adequacy of America.”

He goes on to say, “To me, the tragedy of the Vietnam war was not that there were disagreements—that was inevitable, given the complexity of the (conflict)—but that the faith of Americans in each other became destroyed in the process.”

Kissinger called himself “absolutely unreconstructed” on that point.

“I believe that most of what went wrong in Vietnam we did to ourselves,” he said, adding, “I would have preferred another outcome—at least another outcome that was not so intimately related to the way that we tore ourselves apart.”

Disappointingly, much of what Mr. Kissinger said is true.

Certainly, much of the burdens associated with our foreign policies do not affect the average person; they are absorbed by America’s all-volunteer military. Still, wars and debates over wars have the power not only to tear our society apart, but also to destroy our faith in each other in the process. These factors are latent, ignored, and often misunderstood, but are detrimental to our country nonetheless.

In this respect, criticism of war should not end at an aversion to deficit spending. Certainly, increased public debt and diminished civil liberties are enduring, adverse effects of war. As writer Randolph Bourne famously declared during World War I, “War is the health of the state.”

But in addition to expanded government power, wars also become a template for regimentation in other areas of life. As we witnessed in the lead up to the war in Iraq, war can erode what should be the public’s normal propensity to question authority and lead to a herd mentality that demands blind obedience to state authority.

Over time, and through decades of continual foreign intervention, wars can radically alter our national character and transmogrify the spirit and moral temperament of our society. Sadly, such a perilous path could doom our nation to a fate that befell history’s other predominant great powers.

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Check out the most recent volume of State Department reports on Vietnam. You won’t be disappointed.