Trump said it 'automatically' makes sense to include Canada in the new defence system, but insisted that Canada will "pay their fair share."

Donald Trump says Canada has asked to join the missile-defence program his administration is building, adding a new chapter to a long-running cross-border saga.

President Donald Trump vowed that a “Golden Dome” missile-defense shield should be “fully operational” by the end of his term, saying it would be able to protect the US from threats including ballistic missiles,