South Korea's defense posture is facing one of its most vulnerable moments in history due to the fallout from President Yoon Suk Yeol's martial law crisis, military analysts said Thursday. They expressed concerns over the military's readiness to effectively respond to possible North Korean provocations.

SEOUL, South Korea (AP) — South Korea’s previous defense minister was formally arrested Wednesday over his alleged collusion with President Yoon Suk Yeol and others in imposing martial law last week, as authorities investigate whether their acts amount to rebellion.