A standoff between rival government forces outside the presidential compound in South Korea is a startling development, even for observers used to the country’s famously rough and tumble politics

South Korea's President Yoon Suk Yeol faces a new and potentially more robust attempt to arrest him on insurrection charges after a top investigator vowed to do whatever it takes to break a security blockade and take in the impeached leader.

It was unclear when and how police could make the arrest and whether the presidential security service, which has blocked access by investigators with a search warrant to Yoon's office and official residence,