Leaving the White House Tuesday morning, President Joe Biden said he had decided how the U.S. would respond to the attack by Iran-backed militants, but gave no more details. Three American troops were killed and "many" were wounded, Jan. 28, 2024, in a drone strike in northeast Jordan near the Syrian border, President Joe Biden said. Planet Labs PBC via AP, FILEDetails about how an enemy attack drone was able to reach a remote U.S. military base in Jordan were still trickling in Tuesday, as the military continued its investigation. Some Republicans have questioned Biden's strategy in the Middle East so far, suggesting he should attack Iran more directly. Officials ABC News spoke with Tuesday would not say where the U.S. strikes might occur or whether they would target Iranian officials directly.