Trump’s Golden Dome Could Spark the Biggest Defense Boom in Decades

In March 1983, President Ronald Reagan stunned the world with a bold proposal: a space-based missile defense system that would render nuclear weapons obsolete.

Dubbed the Strategic Defense Initiative (SDI)—and quickly nicknamed “Star Wars” by the press—Reagan’s plan aimed to protect the U.S. from intercontinental ballistic missile attacks using lasers and particle beams in outer space. It was a visionary concept, perhaps decades ahead of its time.

Although ultimately downsized and defunded following the collapse of the Soviet Union—an estimated $30 billion was poured into the project between 1983 and 1989—SDI planted the seeds of a high-tech defense future.

Today, more than 40 years later, that future may be arriving faster than we think.

President Donald Trump’s recent executive order revives many of the SDI’s ambitions, albeit with a modern twist. His January 27 directive launched what he first called an “Iron Dome for America,” later rebranded as the “Golden Dome.”

A New Era of Missile Defense

If realized, I believe Trump’s Golden Dome would be a game-changer.

Similar to Israel’s famous Iron Dome, which began operating in 2011, Trump’s iteration envisions a system of space-based interceptors, high-altitude sensors and real-time tracking satellites capable of identifying and neutralizing incoming threats before they breach U.S. airspace. Think of it as a virtual dome guarding the country from missile attacks launched by rogue states or adversaries.

To help back this vision, Trump has proposed a $1 trillion defense budget for fiscal year 2026—an eye-popping amount that would represent a nearly 12% increase over current levels. According to the president, some of the additional spending may come from cuts recommended by Elon Musk’s Department of Government Efficiency (DOGE).

To be clear, the U.S. is already spending well over $1 trillion on its military as the annual defense budget has increased for the past four fiscal years through 2025.

US national defense