The President announced plans to develop a space-based missile-defense system—but concerns abound, including over costs.

Some experts are worried about the cost and timeline of U.S. President Donald Trump's proposed "Golden Dome" missile defence system, which Canada has expressed interest in joining. They also say it could set off a space-based arms race that would escalate global tensions.

The anti-missile shield that Donald Trump wants to put in the sky could protect North America from attacks. But it could also invite them.

Ryabkov also Saidthat with the Golden Dome defensive shield, the air defense system receives space-located interceptors, which is 'extremely destabilizing'

If you were worried about the possibility of World War III, fear not: Donald Trump has announced plans to develop a "golden dome" missile defence system to keep the U.S. safe — and Stephen Colbert has thoughts.

The so-called "Golden Dome", inspired by Israel's land-based Iron Dome defense shield, is an ambitious project aimed at blocking threats from China and Russia, which the United States views as its two biggest geopolitical competitors.