South Korean President Yoon Suk Yeol triggered the country’s biggest political crisis in decades Tuesday night when he abruptly imposed martial law, only to backtrack less than six hours later in the face of fierce opposition in parliament — including inside his own party — and from the public.

South Korean President Yoon Suk Yeol’s future is hanging in the balance after a chaotic night during which he dramatically declared martial law and then withdrew it just as sudd