(THE CONVERSATION) President Donald Trump announced a plan to build a missile defense system, called the Golden Dome, on May 20, 2025. The system is intended to protect the United States from ballistic, cruise and hypersonic missiles, and missiles launched from space.

Donald Trump wants to protect the United States from ballistic and hypersonic missiles with a “Golden Dome,” and Canada, officially, wants in.

If the tech entrepreneur is successful in his bid to build part of the controversial project, it could mean billions more in the pocket of the world’s richest man

But officials have repeatedly scuttled the idea given the cost and length ... “What Golden Dome is doing is allowing us to do a more holistic mission analysis,” Saltzman said.

The Pentagon completed an initial blueprint for the proposed “Golden Dome” air and missile defense system, according to the Department of Defense, as questions continue to surface regarding the feasibility and cost of the initiative promoted by the Trump administration.