(Bloomberg) -- The US is running "dangerously low" on the key munitions used during the war against Iran, according to a Bloomberg Economics report published Tuesday. Most Read from BloombergThe Pentagon's stocks of hard-to-replace air defense interceptors are "critically low," while long-range missile supplies are "under pressure," Bloomberg Economics defense lead Becca Wasser and Courtney McBride said in an analysis. While US missile inventories are classified, the Bloomberg Economics report is based on Defense Department budget documents and public reporting on weapons stocks. It adds to a growing list of other evaluations highlighting the impact of the war on US weapons stocks. Part of the Pentagon's $67 billion request for emergency funding this fiscal year includes an $18.2 billion request for key munitions used againt Iran."