Trump’s Golden Dome could make the U.S. less safe, arms control expert says

President Donald Trump’s idea of a “Golden Dome” missile defense system carries a range of potential strategic dangers for the United States.

Golden Dome is meant to protect the U.S. from ballistic, cruise and hypersonic missiles, and missiles launched from space. Trump has called for the missile defense to be fully operational before the end of his term in three years.

Trump’s goals for Golden Dome are likely beyond reach. A wide range of studies makes clear that even defenses...