The Iranian missile strike on American locations in Iraq was a calibrated event intended to cause minimal casualties, according to senior U.S. officials. Picture: Planet Labs Inc./Middlebury Institute of International Studies via AP

Washington – The Iranian missile strike on American locations in Iraq on Tuesday was a calibrated event intended to cause minimal casualties, give the Iranians a face-saving measure and provide an opportunity for both sides to step back from the brink of war, according to senior U.S. officials in Washington and the Middle East.

White House officials were bracing as early as Tuesday morning for Iran to respond to the U.S. killing last week of Qasem Soleimani, the head of Iran’s elite Quds Force.

U.S. officials said they knew by Tuesday afternoon that Iran intended to strike at American targets in Iraq, although it was not immediately clear exactly which they would choose.

The early warning came from intelligence sources as well as from communications from Iraq that conveyed Iran’s intentions to launch the strike, officials said.

“We knew, and the Iraqis told us, that this was coming many hours in advance,” said a senior administration official, who like others spoke on the condition of anonymity to discuss sensitive intelligence and diplomatic communications.