The plane crash is the first major test for South Korea’s acting president, Choi Sang-mok, who had been appointed the interim leader only on Friday, as the country grapples with a political crisis at the highest levels.

The impeachment of South Korea’s acting President Han Duck-soo has plunged the country into further political turmoil, coming less than two weeks after lawmakers impeached President Yoon Suk Yeol.

Yoon Suk Yeol has not complied with summonses by authorities investigating whether his martial-law declaration constituted insurrection.

SEOUL—South Korea’s legislature voted to impeach acting President Han Duck-soo on Friday after he declined to make judicial appointments needed to advance the impeachment of his predecessor, extending the political upheaval that began with a short-lived martial law declaration earlier this month.

SEOUL, South Korea -- South Korea’s opposition-controlled National Assembly voted Friday to impeach acting President Han Duck-soo despite vehement protests by governing party lawmakers, further deepening the country’s political crisis set off by President Yoon Suk Yeol’s stunning imposition of martial law and ensuing impeachment.

Tens of thousands of South Korean protesters rallied in Seoul on Saturday (December 28), intensifying calls for the immediate resignation of impeached President Yoon Suk Yeol.