I’m beginning to think the fundamental question of whether the United States should attack Syria over its use of chemical weapons is this: If the United States pulls back on a direct challenge to make Syria pay for its actions, will it embolden Iran to commit even more mischief in the Middle East?

President Obama has pledged to strike Syria if it crossed a “red line” by using chemical weapons on civilians. The Syrians did the deed and the United States is now poised to launch air strikes. Obama has formally asked Congress for authorization and it appears that while the Senate might approve the request, the House of Representatives will pull back.

Without full approval by both houses of Congress, the president is left with two terrible options: walking away from his threat to strike the Syrians or acting on his own as commander in chief by issuing the order to strike.

If he goes it alone, he faces the wrath of a Republican-led House of Reps that detests virtually every policy he proposes. If the president walks away and gives Syria a pass on the hideous act of gassing civilians, he risks looking feckless in the face of imminent threats to a critical region.

Waiting in the wings is the Islamic Republic of Iran, one of Syrian dictator Bashar al-Assad’s primary allies, an exporter of terrorism and a known hater of the United States, aks “The Great Satan.”

The Iranians can bring a lot of misery to the region in a huge hurry if we fail to act.

The world awaits to learn how Congress will respond.