President Trump's missile defense project, called the "Golden Dome for America," could cost hundreds of billions of dollars.

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,

President Donald Trump has announced the concept he wants for his future Golden Dome missile defense program — a multilayered system that for the first time will put U.S. weapons in space.