Biden Vows to Retaliate After Strike Against American Forces in Jordan

This was the day that President Biden and his team had feared for more than three months, the day that relatively low-level attacks by Iranian proxy groups on American troops in the Middle East turned deadly and intensified the pressure on the president to respond in kind.

With three American service members killed and two dozen more injured by a drone in Jordan, Mr. Biden must decide how far he is willing to go in terms of retaliation at the risk of a wider war that he has sought to avoid ever since the Oct. 7 terrorist attack by Hamas touched off the current Middle East crisis.

Until now, the president had carefully calibrated his responses to the more than 150 attacks by Iranian-backed militias on American forces in the region since Oct. 7. He essentially ignored the majority that were successfully intercepted or did little to no damage while authorizing limited U.S. strikes focused mainly on buildings, weapons and infrastructure after attacks that were more brazen, most notably against the Houthis in Yemen who have targeted shipping in the Red Sea.

The first deaths of American troops under fire, however, will require a different level of response, American officials said, and the president’s advisers were in consensus about that as they consulted with him by secure videoconference on Sunday. What remained unclear was whether Mr. Biden would strike targets inside Iran itself, as his Republican critics urged him to do, saying he would be a “coward” if he did not, as one put it.

“The question Biden faces is whether he just wants to react to events in the region or whether he wants to send a bigger message that attempts to restore a sense of deterrence that just hasn’t existed in the region for months now,” said Brian Katulis, a senior fellow at the Middle East Institute who worked in national security positions under President Bill Clinton.

“I’m sure they’re looking for some kind of Goldilocks response here,” he added, meaning “not too hard” that it provokes a full-fledged war, “not too soft” that it just prolongs the conflict “but something that seems just right.”