State-run television reported that air, naval, and land exercises would occur in 14 of the country's 30 provinces and could last as long as five weeks.
The first stage of the maneuvers began with simulated air strikes in the southeastern province of Sistan va Baluchistan.
The exercise involves 12 infantry regiments and is called Zolfaghar's Strike.
A demonstration in support of Iran's nuclear program outside the Isfahan uranium-conversion facility in Isfahan in January (epa)
IRANIANS SPEAK OUT ON THE DISPUTE: To find out more about what Iranians think about the international controversy over their country's nuclear program, RADIO FARDA asked listeners to express their views....(more)