The high-profile project to defend the U.S. against missile threats is prompting longtime defense contractors and startups to tout what they can bring to the table.

The president has long admired Israel’s ‘Iron Dome’ defense system — and there are signs Elon Musk could build it.

Trump's Golden Dome is likely to provide kindling for an arms race that will inevitably clash with his stated desire for denuclearization. He will need to choose.