What to know

• The United States military says it has struck three Iranian oil tankers after US navy warships were targeted with missiles.S1
• Central Command told Iran's Islamic Revolutionary Guard Corps: ‘If you shoot at two of our ships, we will impose an even higher economic cost’S2
• The US Central Command said an aircraft carrier and guided-missile destroyer evaded “multiple unprovoked Iranian attacks”, a day after President Donald Trump sought to minimise the conflict as “small potatoes”.S3S4
• Central Command said two US Navy warships were patrolling regional waters when they were targeted by Iran.S7
• US Central Command says the attacks came after Iran launched ballistic missiles at two of its Navy warships.S8