Former South Korean President Yoon Suk Yeol handed life sentence for leading insurrection

By Helen Regan, Yoonjung Seo, Gawon Bae, CNN Seoul, South Korea (CNN) — Former South Korean President Yoon Suk Yeol was sentenced to life in prison Thursday after a court found him guilty of leading an insurrection during his short-lived imposition of martial law, which plunged the country into political chaos and threatened to unravel