Golly. Speak loudly and carry a small stick, to be sure.
[IsraelTimes] The White House says the US will back efforts to "hold Iran 
...Formerly a fairly civilized nation ruled by a Shah, it became a victim of Islamic revolution in 1979...accountable" for a missile attack at Erbil in Iraq’s Kurdistan region and other threats, seemingly ratcheting up the US’s response to the bombing.
"We will support the Government of Iraq in holding Iran accountable, and we will support our partners throughout the Middle East in confronting similar threats from Iran," US National Security adviser Jake Sullivan says in a statement.
An earlier statement from the State Department said only that the US would "help our partners in the region defend themselves."