TEHRAN (FNA)- Iran's Basij (volunteer) troops held civil defense drills on Sunday to prepare for any hostile air strikes.
The exercises organized by student members of the Basij were held at hundreds of schools across the country and involved transporting wounded people and putting out fires after a fictitious bombardment by enemy planes.
The United States and Israel have hinted they could take military action if Iran presses ahead with its nuclear rights.
Iran, which says the program is for peaceful purposes, says it will retaliate for any strikes against it.
The same day, military officials in Tehran reiterated that Iran was ready to close down the Strait of Hormuz, a sea route at the mouth of the Persian Gulf through which 40 percent of the world's traded oil passes, if the United States attacked.
Navy Commander Rear Admiral Habibollah Sayyari said foreign forces in the region were being closely watched and Iran would not allow any foreign ship to enter its waters.
"We are capable of closing the Strait of Hormuz," he said.
Rasoul Sanairad, a senior Basij political officer, told FNA the strait provided "an exceptional opportunity" for defending the nation.
Military experts say Iran's armed forces can cause havoc on shipping routes, particularly using small craft for hit-and-run attacks.
Iran's navy will hold exercises in December involving missile-equipped battleships and scuba-diving special forces.