Canadian Prime Minister Mark Carney says his government is talking to the U.S. about joining President Donald Trump’s future Golden Dome missile defense program

PM Mark Carney's office says there are "active discussions" on the Golden Dome, but it's too early to say how Canada would join or pay in.

An anti-weapons proliferation group says if Prime Minister Mark Carney signs on to U.S. President Donald Trump’s Golden Dome missile defence shield, Canada could face ballooning financial costs.