Range of 930 KM, 1000 KG warhead... How dangerous are the JASSM-ER missiles, which the US is preparing to fire in Iran?

Bloomberg report, the US Army is preparing to deploy about 82 percent of its JASSM-ER (Joint Air-to-Surface Standoff Missile-Extended Range) long-range missile inventory in this mission. After this, only about 425 missiles will be left for the rest of the world.

President Trump threatens Iran

President Trump issued another statement on Saturday (April 4, 2026), saying that Iran now has only 48 hours. If there is no agreement within this time frame, the situation could become even more serious. He shared a post on the Truth Social platform and said, ' Remember that I gave Iran 10 days to negotiate or open Hormuz. Time is running out, there are 48 hours left, otherwise everything will be destroyed."

-ER missile of the United States?

JASSM missiles are included in both the Long Range and Shutter Range variants of the US. The JASSM-ER missile is one of the state-of-the-art cruise missiles developed by Lockheed Martin in 2001 and has been supplied to the US military for the last two decades. This US missile is specially designed to carry out long-range precision attacks from air to ground, which can easily overcome even the enemy's strong air defense system.

Read also: Trump gives 48-hour ultimatum to Iran to open the Strait of Hormuz, says if it doesn't comply, it will wreak havoc