
Chun In-bum
There is an old military instinct that many civilians find uncomfortable but that every serious leader eventually learns: never start a fight you cannot finish.
That principle is not about aggression. It is about responsibility.
Too often, modern governments enter wars with vague objectives, political slogans or unrealistic hopes that limited pressure alone will somehow force the enemy to compromise. Leaders speak about “sending a message,” “showing resolve” or “managing escalation.” They promise quick operations without sacrifice, limited campaigns without consequences and moral clarity without hard choices.
Reality does not work that way.
War is not a seminar. It is not a social media campaign. It is not an academic exercise in signaling theory. Once it begins, war becomes a contest of endurance, destruction, logistics, political will and human suffering. The side that understands this earliest usually has the advantage.
History repeatedly shows that prolonged wars are often the bloodiest wars. Not because they begin with massive violence, but because leaders hesitate, drift, compromise or refuse to accept what victory actually requires.
The most dangerous wars are often not the largest ones. They are the indecisive ones.
The American Civil War lasted four years and cost more than 600,000 lives. World War I became a slaughterhouse because political leaders on all sides lacked either the imagination or courage to end it decisively. Korea remains technically unfinished more than 70 years later. Vietnam became a symbol of gradual escalation without clear strategic purpose. Afghanistan lasted two decades and ended with the return of the very forces the war was meant to defeat.
The lesson is not that military force never works. The lesson is that military force without a realistic political objective almost never works.
A nation should go to war only under strict conditions. First, its vital interests must truly be at stake. Second, its political leadership must clearly explain the objective. Third, it must possess both the military means and the political will to achieve that objective. Finally, it must be prepared to accept the human cost that comes with war.
If those conditions do not exist, leaders should not start the fight.
But if those conditions do exist, then hesitation becomes its own form of cruelty.
There is an uncomfortable truth that many politicians avoid saying publicly: prolonged wars usually produce more death than short wars. A conflict dragged out over years destroys more cities, displaces more families, exhausts more economies, radicalizes more young men and creates more bitterness that lasts for generations.
A quick war is still terrible. But an endless war is usually worse.
This is why military leaders throughout history have emphasized speed, concentration of force and decisive action. The goal is not destruction for its own sake. The goal is to impose such overwhelming pressure that the enemy either collapses, surrenders or loses the ability to continue.
Critics often describe this view as harsh or immoral. In reality, it may be the more humane position.
A surgeon who hesitates in the middle of an operation can kill the patient. A firefighter who refuses to break through a wall may lose the house. Likewise, a government that commits to war but refuses to fight decisively may condemn both its own soldiers and civilians to years of unnecessary suffering.
This does not mean every problem should be solved militarily. Far from it.
Most crises should be resolved through diplomacy, deterrence, sanctions, covert pressure, alliances or economic tools. War should remain the last resort. It should be rare. Leaders who are eager for war are usually fools, ideologues or men who have never seen combat themselves.
Those who have actually witnessed war firsthand tend to be more cautious, not less. They know what artillery does to a city block. They know what a burned vehicle smells like. They know what it means to tell a family that their son is not coming home.
That is precisely why serious people must speak honestly about what war requires.
One of the most dangerous illusions in modern politics is the belief that wars can be fought cleanly, cheaply and indefinitely. Politicians promise that advanced technology, precision weapons, drones, cyber capabilities and economic sanctions can somehow remove the brutal human reality of conflict.
Technology changes warfare, but it does not eliminate its fundamental nature.
There is still fear. There is still death. There is still destruction. And there is still the requirement for political leaders to make difficult choices.
If a government is unwilling to accept those realities, it should not go to war.
But if it does go to war, then it has an obligation to pursue a rapid and decisive conclusion.
The public also has a responsibility. Citizens should demand honesty from their leaders. They should ask basic questions before supporting military action.
What is the objective?
What does victory look like?
How long will it take?
What is the exit strategy?
What sacrifices will be required?
If political leaders cannot answer those questions clearly, they probably have no business starting the conflict.
This is not warmongering. It is the opposite.
Warmongers are the people who speak casually about military action because they assume someone else will do the fighting. They imagine war as a political tool with low costs and easy reversibility.
The more serious view is that war is so terrible that it should only be entered rarely, reluctantly and with a clear plan to finish it as quickly as possible.
The real crime in war is not always that it begins. Sometimes the greater crime is allowing it to drag on without purpose, without strategy and without the courage either to win or to stop.
Wars should be avoided whenever possible.
But if one must be fought, it should be fought to end swiftly, decisively and without hesitation.
Retired Lt. Gen. Chun In-bum is the former commander of the Republic of Korea Army Special Warfare Command.