War is the appropriate response when one nation is invaded or attacked by another. The most recent obvious example, in Ukraine, illustrates the case: Russia’s unprovoked invasion of Ukraine in 2022 set off a war between the two nations that continues today. Ukraine is completely justified in defending itself by going to war against Russia.
War is the wrong response, however, to terrorist attacks. George W. Bush made this mistake when he responded to Al-Qaeda’s 9/11 attacks in 2001 by sending armies to Afghanistan and Iraq. The result? Two decades of war, thousands and thousands of deaths, two countries devastated, and trillions of dollars expended—with no discernible reduction in terrorist activity by Al-Qaeda, Isis, Iran, Hezbollah, etc. Going to war against terrorism leads only to bloodshed, destruction, and hatred.
Now Israel is making the same mistake—not for the first time—in Gaza and the West Bank, with the same results.
So what is the appropriate response to terrorism?
Criminal investigation, arrests, and prosecution.
Terrorist acts are criminal acts. Send investigators. Offer rewards. Make arrests. Put suspects on trial. Then make damned sure that your system of justice is truly just, and is not actually a system of injustice that promotes . . . terrorism.
Nations that go to war against criminals commit criminal acts: they become criminals.