South Korea's ousted leader Yoon Suk Yeol argued that his brief martial law declaration late last year was "not a coup d’etat" as he appeared in court on Monday for the start of a criminal trial over charges that he led an insurrection.

Former South Korean President Yoon Suk Yeol left the presidential residence in Seoul on Friday for his private home, a week after the Constitutional Court removed him from office over his ill-fated imposition of martial law in December.