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.

Canadian Prime Minister Mark Carney said Wednesday his government is talking to the U.S. about joining President Donald Trump's future Golden Dome missile defense program. The multilayered, $175 billion system would for the first time put U.

Canadian Prime Minister Mark Carney confirms that Canada is discussing joining the U.S. "Golden Dome" missile defense system.