Due to the war cost-effect, the first waves of Iranian drone raids on the countries of the region caused their usage of costly anti-missiles (e.g. Patriots), and even inefficient flights of fighters sent to fight unmanned ([which caused friendly-fire over Kuwait](https://defence24.pl/power-arms/American-shot-thinker-from-kuwait)). Despite this, Iran through anti-aircraft defence systems has struck targets from Kuwait to Saudi Arabia.