Iran Foreign Ministry spokesman Ismail Baghaei:
Countries participating in U.S. military refueling operations are considered to be committing an "act of aggression," warning that Iran reserves the right to strike the source of any attack. The warning was directed at Bulgaria,
Assessment
Iran is drawing a red line around any country that supports U.S. military refueling operations, explicitly naming Bulgaria as a target of this threat. By labeling such participation an act of aggression, Tehran is expanding the potential theater of retaliation beyond direct U.S. assets to include allied nations. This escalates the stakes for any state considering logistical cooperation with American forces in the region. Watch for whether Bulgaria adjusts its posture or other NATO members receive similar warnings.