Golden dome or golden gamble? Canada steps into Trump’s missile shield dream

Canada has expressed interest in joining the United States' "Golden Dome" missile defense initiative. The announcement came from President Donald Trump during a press briefing in the Oval Office on May 20, 2025, where he unveiled plans for the $175 billion project to create a multi-layered shield against advanced missile threats.

"Canada has called us and they want to be a part of it," Trump stated. "They want to hook in and they want to be a part of it." He emphasized that Canada would contribute its "fair share" financially, adding, "We'll work with them on pricing."

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The Canadian government confirmed ongoing discussions with the US regarding participation in the Golden Dome program. In a statement, Prime Minister Mark Carney's office noted that missile defense talks are part of broader trade and security negotiations with the Trump administration.

Historically, Canada has been involved in continental defense through the North American Aerospace Defense Command (NORAD), contributing to the tracking of aerial threats. However, it has refrained from joining US missile defense programs, a stance dating back to Prime Minister Paul Martin's government in the early 2000s.

The current interest marks a potential policy shift, influenced by evolving global threats and aging Arctic surveillance infrastructure.

But the form of Canadian participation is, again, unclear. The US commander for NORAD appeared recently to suggest that Canada's participation will be limited to tracking threats.

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What is the Golden Dome project?

The Golden Dome project is inspired by Israel's Iron Dome but significantly more expansive, aims to protect against a spectrum of threats, including intercontinental ballistic missiles, hypersonic weapons, and space-launched attacks.

General Michael Guetlein of the US Space Force has been appointed to lead the initiative, which plans to integrate ground-based interceptors with space-based sensors and potentially laser-equipped satellites.

While President Trump envisions the system becoming operational within three years, experts express skepticism. The Congressional Budget Office estimates that the project's costs could escalate to over $540 billion over two decades, considering the technological advancements required.

Canada's potential involvement in the Golden Dome aligns with its recent defense initiatives. In 2022, the then-Defence Minister announced a $40 billion plan to modernize NORAD over 20 years, emphasizing the need to address threats like hypersonic and cruise missiles.