U.S. President Donald Trump is proposing the creation of a Golden Dome missile defence system to protect America, and he's invited Canada to join — for a price. But does the U.S. have all the leverage? Andrew Chang breaks down the vital role Canada's geography and technology would play in detecting potential missile threats and why the U.S. likely couldn't go it alone. Images provided by Getty Images, The Canadian Press and Reuters. »»» Subscribe to CBC News to watch more videos: http://bit.ly/

Tag-uri: Donald Trump