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.

Donald Trump made the executive order to build an Iron Dome-like defence system that aims to protect US citizens and critical infrastructure across the country

The US may soon develop an air defence system like Israel's Iron Dome to counter ballistic, hypersonic, advanced cruise missiles