The statement came days after Trump signed an order that ”mandated a process to develop an ‘American Iron Dome,’” a next-generation U.S. missile defence shield against ballistic, hypersonic, cruise missile and other forms of aerial attack.

President Donald Trump has ordered the development of an "Iron Dome" defense system to shield the United States from an intercontinental missile attack.

The United States is estimated to have spent more than $400 billion on the kinds of antimissile goals that the president now says will provide “for the common defense.”