The D Brief: Seoul’s six-hour self-coup; Trump’s SecArmy pick; Palantir’s 18 theses; Lockheed braces; And a bit more.

Martial law, revokedFor six tense hours, South Korea experienced a self-coup brought about by an unpopular president Tuesday in Seoul. Police officers blockaded the National Assembly, and helicopters tried to prevent lawmakers from overturning President Yoon Suk Yeol’s surprise declaration of martial law.But in the end, citizens joined lawmakers to protest the draconian measures and overturn Yoon’s announcement of martial law in a unanimous vote that included members of Yoon’s