Where? Everything from Iran so far shows it was in their airspace. Especially now that they say they've picked up wreckage in their waters.
Seems last night Trump called for strikes but then pulled out last second (bbc).
Iran would say that, they are probably lying ofc. The US knows how to skirt borders without actually crossing them, they have been doing it near Russia for decades. But unlike Russia, Iran (or some rogue soldier) took the bait and fired first. Now they are pooing themselves because the US doesnt let this stuff slide easily.