South Korean President Yoon Suk Yeol on Wednesday said he would lift martial law just hours after he imposed it, in a brief and confusing episode in which he blasted the opposition as "anti-state forces" threatening the country's democracy.
The unexpected move from Yoon -- the first time martial law had been declared in South Korea in more than four decades -- alarmed the United States and the country's other allies. What do we know about the imposition, its lifting and what might come next?