South Korean President Yoon Suk Yeol on Thursday angrily defended his shock decision to declare martial law last week and signaled he would not resign from office.

South Korean President Yoon Suk Yeol defended his decision to declare martial law in a televised address Thursday, claiming he did it to save democracy and vowing that he will "fight to the end."

As the high-stakes investigation unfolds, President Yoon's leadership and the nation's stability appears more and more uncertain.