Russia and China have been ramping up their military presence in space in order to keep up with American capabilities.
"An explosion in space... never really ends."
Trump sees space as a “warfighting domain.” The Outer Space Treaty disagrees.
He may be referring to a proposal that died in the Senate last year.
The 2019 budget for Air Force space equipment and R&D, including new satellite defenses, represents a 9-percent increase over 2018.