Experts highlight logistical and strategic challenges in adapting the Iron Dome system for US homeland defense

An executive order said the United States faced a “catastrophic threat” from advanced aerial weapons. But a defense system like Israel’s may not be feasible in the country, which is more than 400 times larger.

President Donald Trump is preparing an executive order for a “next generation” defense shield to protect the US against ballistic missiles and other long-range attack.