South Korea's president has defended his martial law decree as an act of governance and denied rebellion charges, vowing to "fight to the end" in response to attempts to impeach him and intensifying investigations into last week's dramatic move.

UPDATE — 11:43 AM: South Korea ‘s President Yoon Suk Yeol has said he will lift his controversial martial law order following widespread condemnation from the Korean public and all sides of country’s political sphere.