Joint News Conference between US Defense Secretary Lloyd Austin and ROK Defense Minister Lee Jong-sup at the Pentagon.
Secretary Austin Joint News Conference with South Korean Defense Minister
You're referring to Syngman Rhee, who was the 1st, 2nd and 3rd ROK President, who served 12 years in office before being run out of the Blue House due to a student revolution.
https://en.m.wikipedia.org/wiki/Syngman_Rhee
He only has one five-year term as ROK President which expires on May 10, 2027 unless he gets impeached and removed from office (see Park Geun-hye, who's term was supposed to end on February 25, 2018)