Thus far Bashar Assad seems unintimidated. Brushing off the strikes, he has defiantly gone back to bombing the rebels from the same Shayrat air base that the U.S. missiles hit.

Trump "will not stop here," warned U.N. Ambassador Nikki Haley on Sunday. "If he needs to do more, he will."

If Trump fails to back up Haley's threat, the hawks now cheering him on will begin deriding him as "Donald Obama."

But if he throbs to the war drums of John McCain, Lindsey Graham and Marco Rubio and orders Syria's air force destroyed, we could be at war not only with ISIS and al-Qaida, but with Syria, Russia, Iran and Hezbollah.

A Syrian war would consume Trump's presidency.

Are we ready for that? How would we win such a war without raising a large army and sending it back into the Middle East? The Greatest Comeback:...Patrick J. BuchananBest Price: $3.59Buy

Another problem: Trump's missile attack was unconstitutional. Assad had not attacked or threatened us, and Congress, which alone has the power to authorize war on Syria, has never done so.