Iran's complex terrain makes it difficult to attack, turning underground missile cities into a major challenge for the U.S. military.

The terrain of Iran is like a tomb for empires—the depth of the so-called "underground missile cities" is beyond the reach of bunker-busting bombs.

Therefore, if the United States wants to completely destroy Iran's nuclear facilities, it would have to deploy ground forces. But once they enter Iran, it would be even deeper water than Afghanistan.

Original source: toutiao.com/article/1860700373140551/

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