U.S. President Donald Trump unveiled a plan for his ambitious "Golden Dome" missile defense shield this week, stating it will cost $175 billion and take about three years to develop — but some experts say the price tag could be many times higher.

President Trump's missile defense project, called the "Golden Dome for America," aims to protect the U.S. from foreign threats. But it has a steep price and has been criticized by China as threatening to increase the risks of militarizing space and a global arms race.

President Trump, Defense Secretary Hegseth, and Space Force Vice Chief of Operations, General Michael Guetlein will reportedly announce a multi-billion-dollar missile defense shield for the U.S. that they're calling the "Golden Dome.