If the reported news from the NYT is to be believed (iffy at best) this attack wasn’t a true attack in my mind since they made sure the base was empty and launched enough to show force but not enough to get through the defense system.
It’s important to not that Iran did not attack the troops in either Syria or Iraq but rather a heavily fortified base that enjoys support by the Gulf Nations.
Three Iranian officials familiar with the plans said that Iran gave advanced notice that attacks were coming, as a way to minimize casualties. The officials said Iran symbolically needed to strike back at the U.S. but at the same time carry it out in a way that allowed all sides an exit ramp; they described it as a similar strategy to 2020 when Iran gave Iraq heads up before firing ballistic missiles at an American base in Iraq following the assassination of its top general.