A barrage of U.S., coalition and militant attacks in the Middle East over the last five days are compounding U.S. fears that Israel’s war on Hamas in Gaza could expand, as massive military strikes failed to stall the assault on Red Sea shipping by Yemen-based Houthis.

Even as the U.S. and allies pummeled more than two dozen Iran-backed Houthi locations on Friday in retaliation for attacks on ships, the Houthis have continued their maritime assaults. And Tehran struck sites in Iraq and Syria, claiming to target an Israeli “spy headquarters,” then followed that Tuesday with reported missile and drone attacks in Pakistan.