What to know about martial law and the impeachment vote threatening South Korea's president

TOKYO (AP) — Is South Korean President Yoon Suk Yeol on the verge of being forced out of office for declaring martial law nearly a week ago?

The question, which has dogged Yoon through a series of moves by the opposition to end his presidency, will be highlighted Saturday, when parliament seems likely to make a second attempt at his impeachment.

The last week has seen political chaos and huge protests by angry South Koreans against Yoon. After his baffling, dark-of-night martial law edict on Dec. 3, the first in more than 40 years, throngs of lawmakers and nearly 300 heavily armed soldiers rushed to the parliament ahead of a predawn vote that reversed it after only six hours.

As lawmakers debate impeachment, deepening investigations into Yoon's decree have been accompanied by detentions of high-level officials.