The man central to blocking investigators from arresting South Korea's impeached President Yoon Suk Yeol has come under the spotlight himself in the political crisis sparked by Yoon's brief declaration of martial law last month.

Protesters in South Korea are calling for President Yoon Suk Yeol to be arrested as a warrant expires at midnight on Monday. The chief of security for Yoon, Park Chong-jun, said Sunday he could