• Canada is interested in participating in the US Golden Dome missile defense shield.
• The project's details remain closely guarded, with no public declaration on NORAD's role.
• Canada has invested $28.3 billion to modernize NORAD over the next two decades.
• Ottawa's participation in Golden Dome may depend on trust and cost-sharing.

Canada's potential participation in Golden Dome may indicate a strengthening of North American defense cooperation, but could also be hindered by strained relations between Ottawa and Washington. The project's success may depend on finding a mutually beneficial cost-sharing arrangement, which could set a precedent for future bilateral defense collaborations.