U.S. President Donald Trump picked a design for his Golden Dome missile defense system and named a leader of the ambitious $175 billion defense program. Here are details on Golden Dome, where the idea comes from and how it will work.

Donald Trump has ordered weapons to be deployed to space for the first time under a futuristic “Golden Dome” missile defence system plan.

Some $25 billion (£18.6 billion) has been allocated in the giant spending bill passing through Congress.