South Korea's Constitutional Court on Monday began reviewing the impeachment of President Yoon Suk Yeol over his Dec. 3 martial law proclamation, starting a process to decide if he will be removed from office,

South Korea's constitutional court has begun trial proceedings for the impeachment of President Yoon Suk Yeol, who was suspended for declaring martial law and plunging his country into political turmoil.

The leader of South Korea’s ruling party said he’s stepping down following mounting calls for his resignation, after President Yoon Suk Yeol was impeached over the weekend for his brief martial-law decree.