A proposed US missile defence project known as the “Golden Dome for America” could eventually cost as much as $1.2 trillion, according to defence analysts and early government assessments.

The ambitious programme aims to create a vast shield capable of detecting, tracking and intercepting missile threats aimed at the United States, including ballistic, hypersonic and space-based attacks.

The proposal has drawn comparisons to Israel’s “Iron Dome” system, though experts say the scale and complexity of protecting the entire United States would be far greater.

The initiative has gained renewed attention after senior American officials presented concept images and strategic plans outlining a nationwide network of satellites, radar systems and interceptor missiles. Supporters argue the system is necessary as geopolitical tensions continue to rise with countries such as China, Russia and North Korea advancing their missile capabilities.

However, defence specialists have questioned both the practicality and affordability of the project.

“This would be one of the most expensive military defence programmes in modern history,” one Washington-based security analyst told US media. “The technology required to fully shield a country the size of the United States does not yet exist at the scale being proposed.”

Critics also warn that such a programme could trigger a new global arms race, encouraging rival nations to develop more advanced offensive weapons designed to bypass American defences.

The estimated $1.2 trillion cost includes long-term development, satellite deployment, maintenance, infrastructure upgrades and operational expenses over several decades.

Some lawmakers have already raised concerns about whether the project would place additional pressure on the US federal budget, particularly at a time of growing national debt and increased military spending abroad.

Despite the concerns, supporters of the initiative insist the system would strengthen national security and deter future attacks.

The Pentagon has not confirmed a final budget or timeline for the project, and officials say discussions remain in the preliminary planning stage.