Iran has threatened to close the Strait of Hormuz in response to continued Israeli attacks.
In an interview with state media outlet Mehr, a member of Iran's national security board said Iran had "numerous options to respond to the enemies".
Closing the economically important waterway remained an option, an official named as Saeedi said.
He added: "The enemies of the sacred system of the Islamic Republic of Iran should know that if there is a threat against our homeland and people, they will certainly face a crushing response."
For context:
The strait lies between Oman and Iran and links the Gulf north of it with the Gulf of Oman to the south and the Arabian Sea beyond.
About a fifth of the world's total oil consumption passes through the strait, near the city of Khor Fakkan.