WASHINGTON — President Donald Trump unveiled an ambitious plan for a missile defense initiative known as the Golden Dome, marking a significant shift in U.S. military capabilities by proposing the deployment of weapons in space. This multilayered defense system, estimated to cost around $175 billion, aims to intercept missiles at various stages, including those launched from outer space.

During a recent address from the Oval Office, Trump expressed his aim for the system to be operational by the end of his term in 2029. “We expect this to be fully functional, including the ability to shoot down missiles launched from space,” he stated, underscoring the program’s urgency and scope. However, a U.S. official acknowledged that initial capabilities may only be realized by that time.

The president also appointed General Michael Guetlein, currently the vice chief of space operations, to lead the Golden Dome initiative. The proposed system would utilize both ground- and space-based technologies to establish a robust defense, targeting missiles before they launch, during their ascent, mid-flight, or as they descend toward their targets.

Pentagon officials have been exploring various options to implement this system, indicating that potential plans vary in scope and cost, with categorizations from medium to “extra high.” The differences hinge on the number of satellites and advanced interceptors required. Newly released estimates from the Congressional Budget Office suggest that the space-based components alone could require up to $542 billion over two decades, with Trump seeking an initial $25 billion in funding through a proposed tax bill moving through Congress.

The Pentagon has highlighted concerns regarding advancements in missile technology from countries like China and Russia, necessitating significant upgrades in U.S. defense systems. These advancements underline the need for an early and mid-course interception capability, particularly as adversaries develop increasingly sophisticated offensive capabilities in space.

General Chance Saltzman, head of the U.S. Space Force, emphasized the unprecedented nature of the Golden Dome program. He noted that the project represents new demands for military operations in space. In recent developments, both China and Russia have voiced strong opposition to the concept, labeling it as “deeply destabilizing” and fearing it could turn outer space into a battleground.

Currently, the Golden Dome initiative remains in its conceptual phase, pending further development. Newly confirmed Air Force Secretary Troy Meink stated that comprehensive requirements for the system are still being established, which deviates from standard military development protocols.

The creation of the Golden Dome will likely integrate existing missile defense systems, such as the Patriot missile batteries currently deployed in Ukraine as part of its defense against missile threats. Trump originally directed the Pentagon to explore a space-based defense strategy early in his administration.

As discussions continue, the potential implications of this ambitious program raise questions about the future of military engagement and defense capabilities in an evolving global landscape.