When Conscience Meets War

“A time comes when silence is betrayal.”

— Martin Luther King Jr., Beyond Vietnam (1967)

I have spent my life trying to be faithful to two institutions. One taught me about duty.

The other taught me about conscience.

As a retired United States naval officer, I understand that the first responsibility of government is to protect its people. I also understand that those who command armies carry burdens that few of us can fully comprehend. As a Christian, I have also learned that power, however necessary, is never self-justifying. It must always answer to conscience.

That conviction is what led me to write this essay.

Two recent events converged in my mind. The first was Pope Leo XIV’s Magnifica Humanitas, a call to recover humanity’s moral bearings in an age of unprecedented technological and political power. The second was the debate over presidential war powers amid the conflict with Iran—a debate that raised not only constitutional questions, but moral ones as well.

At first glance, the two events appeared to belong to different worlds. One spoke the language of theology. The other, the language of politics. Yet something about their convergence troubled me. At first, I thought I was writing about the just war tradition. I wasn’t.

I found myself asking a different question. What is the Church’s vocation when conscience meets war?

For sixteen centuries, the just war tradition has sought to place moral limits on humanity’s most destructive act. In The City of God, Augustine did not set out to make war easier to justify. He sought to remind rulers that even in war they remained accountable to a law higher than themselves. His concern was never simply the conduct of war, but the preservation of a moral order in which power itself remained answerable to justice.

Augustine lived in an age when the Roman world itself seemed to be unraveling. He understood that the gravest threat to civilization was not merely the violence of war but the temptation to surrender one’s moral bearings in the midst of it. War does not merely test armies. It tests souls. Today, however, the Church confronts a world Augustine could never have imagined—a world of nuclear arsenals, autonomous weapons, artificial intelligence, cyberwarfare, and conflicts whose human cost is witnessed around the globe in real time.

Perhaps this is not the moment to abandon the just war tradition. Perhaps it is the moment to recover its original purpose and the Holy Father has spoken. The more searching question is not whether he has departed from the tradition, but whether we have allowed the tradition to drift from its deepest intention.

If just war has become more effective at explaining military action than restraining it, then perhaps the Church is being called not to discard Augustine, but to rediscover him. The Church cannot be expected to determine military strategy, nor should it become another political actor. Governments will always calculate interests. Military leaders will always calculate risks. Politicians will always calculate votes.

The Church was called to do something else. It was called to form conscience. It can remind every nation that before there are enemies, there are human beings. Before there are borders, there are children. Before there is strategy, there is the immeasurable worth of every human life.

This is not about choosing sides in a conflict. Rather, it is about choosing the side of conscience. History will decide who prevailed in a particular war. Conscience asks a different question. What became of us while we were fighting it?

The world does not need the Church to become another superpower. It needs the Church to remain what no superpower can ever become: humanity’s conscience, because if the Church cannot speak for every innocent life, regardless of flag, faith, or frontier, then who will?