American aircraft expanded their bombing in Iraq on the weekend, targeting Islamic State fighters in the Sunni heartland to protect the Haditha Dam northwest of Baghdad. Meanwhile, President Obama says he'll make his case to the American public this week for expanding U.S. military involvement in Iraq and perhaps Syria. But whatever else he says, he won't call it a war.

"On Wednesday I'll make a speech and describe what our game plan's going to be going forward," Mr. Obama said on NBC's "Meet the Press."...