South Korean president Yoon appears in two different courts

A protester wearing a mask of impeached South Korean President Yoon Suk Yeol during a rally (Ahn Young-joon/AP)

South Korean President Yoon Suk Yeol appeared in two different courts on Thursday, contesting his arrest on rebellion charges in one and fighting an effort to remove him from office in the other.

Both cases — one on criminal charges, one an impeachment — are related to his brief imposition of martial law in December.