President Trump's claim that America has a "virtually unlimited" munitions stockpile and could fight a war "forever," could soon be tested as counterattacks target military bases and U.S. Embassies across the Middle East in what has become a rapidly-widening conflict.
Why it matters: Reporting suggests that the U.S. stockpile and that of key allies, such as Israel and Gulf nations, are dwindling faster than production can replace the weapons.