Pentagon confirms four new attacks on US bases after defensive airstrike

American troops were hit four times by Iranian-backed groups in the Middle East after a U.S. strike Wednesday on an Iranian facility in Syria.

Pentagon deputy press secretary Sabrina Singh said Thursday the U.S. has now been attacked 46 times since Oct. 17, following the breakout of a major war between Israel and Palestinian militant group Hamas.

That includes 24 attacks in Iraq and 22 in Syria, Singh said. The attacks have all involved explosive drones and rockets.

“If these attacks continue against our personnel, we won’t hesitate at a...