President Joe Biden announced he decided how the United States would respond to a deadly Iraqi militia drone strike on Tuesday, but as of Thursday morning, it hasn’t taken place.

The U.S. has accused the Islamic Resistance in Iraq, an umbrella group of Iranian-backed militias, of carrying out Sunday’s attack that targeted a small U.S. base in northeast Jordan known as Tower 22. Three service members were killed in the attack, and dozens of U.S. forces were injured as well.