North Korea’s nuclear detonation over the weekend spurred the deployment of the rest of the Terminal High Altitude Area Defense, which is designed to stop missiles from the North.
President Trump took a stern line against the new liberal government in South Korea, accusing it of talking of “appeasement,” amid an escalating trade dispute between the two nations.
Asked if he had considered resigning over policy differences with the president, Defense Secretary Jim Mattis said he was committed to serving as secretary of defense.
In a Twitter post, the president said the country has been paying North Korea for 25 years, though it was not clear what money he was referring to.
The United States uses two different categories of missile defense to counter North Korea. Here’s how they work and — sometimes — how they don’t.