Iran threatened the United States with "economic warfare" on Tuesday and said it had fired an advanced missile at US warships, underscoring the risks of further escalation in the war only days after both sides traded blows again.

Tehran announces 'Economic War Headquarters,' as US sanctions bite; Iran's oil minister says Kharg Island hit 550 times in recent months, as CENTCOM strikes ship off its coast

The comments came a day after the U.S. struck three Iranian oil tankers in response to Tehran launching ballistic missiles at Navy warships.