North Korea has been digging tunnels for decades, relocating all its major bases and factories underground.
In the event of an emergency, the entire military is planned to retreat underground to wage a prolonged war of attrition.
Near the 38th parallel, so many fake tunnels have been dug alongside the real ones that it is said to be impossible for the U.S. military to pinpoint its attack targets.
Why has Iran neglected to do this, when a small, sparsely populated, oil-poor country like North Korea has managed it?
Even now, Iran should mobilize all its national resources to prepare for the war that looms just months away.