The United States is preparing to deploy its first weapon in space. Unveiled by President Donald Trump, the proposed Golden Dome missile defence system aims to intercept aerial threats from anywhere — including outer space. If completed, it would mark a transformative leap in the U.S. military’s approach to defence, integrating space-based sensors, interceptors, and ground-based systems into a unified shield.
A defence shield across land, sea—and space
Trump said the system has officially entered the architecture phase and will become operational in about three years, by the end of his term. He first floated the idea in January after returning to the White House, promising to counter what he called “next-generation threats” including ballistic, cruise, and hypersonic missiles.
Inspired by Israel’s Iron Dome, the U.S. version expands the concept beyond short-range interceptions to include global-scale missile defence. Trump added that the Golden Dome will incorporate technologies across “land, sea, and space,” and be capable of stopping threats before launch or mid-flight.
A nod to Reagan’s ‘Star Wars’ dream
Trump also referenced Ronald Reagan’s Cold War-era Strategic Defense Initiative — often dubbed “Star Wars” — saying past attempts lacked the necessary technology. “Now we do,” he said. While Reagan’s concept remained largely theoretical, Trump’s proposal is being pitched as technically achievable with today’s advancements in space and AI.
High costs and high stakes
The project’s financial footprint is significant. Trump has proposed $25 billion in initial funding, but the Congressional Budget Office estimates the full cost could exceed $500 billion over two decades. Trump maintains the total will be closer to $175 billion, absorbed gradually across multiple budget cycles.
General Michael Guetlein of the U.S. Space Force will lead the project. A veteran of missile defence and space systems, Guetlein’s appointment signals the program’s strategic priority within U.S. defence circles.
Global pushback—and a potential partner
Russia and China have condemned the plan, warning it could militarise space and destabilise existing arms control norms. The Kremlin labelled it a “significant strengthening” of U.S. space-based combat capabilities.
Meanwhile, Canada has shown interest in joining the Golden Dome, with officials describing it as aligned with national security interests.
