South Korean President Yoon Suk Yeol defended his martial law decree as an act of governance and denied rebellion charges, vowing Thursday to “fight to the end” in response to attempts to impeach him and intensifying investigations into last week’s dramatic move.

South Korean President Yoon Suk Yeol vowed on Thursday to fight "until the very last minute" in a defiant address defending his shock decision to declare martial law and deploy troops to the country's parliament last week.