WASHINGTON (AP) — The Trump administration will roll out a new strategy Thursday for a more aggressive space-based missile defense system to protect against existing threats from North Korea and Iran and counter advanced weapon systems being developed by Russia and China.

Details about the administration's Missile Defense Review — the first compiled since 2010 — are expected to be released during President Donald Trump's visit to the Pentagon with top members of his administration.

The new review concludes that in order to adequately protect America, the Pentagon must expand defense technologi...