President Yoon’s brief martial law declaration and subsequent impeachment trial have deeply divided South Korea, a key U.S. ally.

South Korea's impeached president Yoon Suk Yeol has been ousted from office by the country's constitutional court. Yoon was impeached over his imposition of martial law on Dec. 3 in a surprise late-night broadcast where he declared martial law in South Korea,

South Korea upheld the impeachment of President Yoon, officially throwing him out of office. NBC News' Janis Mackey Frayer reports from Seoul.

South Korean President Yoon Suk Yeol was ousted by the Constitutional Court on Friday, which upheld parliament's impeachment motion over his imposition of martial law last year that sparked the country's worst political crisis in decades.

The nation’s top court unanimously upheld the impeachment of Yoon Suk Yeol, clearing the way for the election of a new president.

The Constitutional Court upheld the impeachment of Yoon Suk Yeol after his declaration of martial law in December

Korea's constitutional court voted unanimously to uphold parliament’s move to impeach Yoon following his declaration of martial law in December 2024.

South Korea’s Constitutional Court has unanimously removed Yoon Suk Yeol as president after he threw the nation into turmoil by declaring martial law and sending troops to parliament in an ill-fated effort to break through legislative gridlock.