Mr Kim, 59, was not due to leave until 2022, after he was re-elected for a second five-year term in 2017.
Mr Kim, oo 59 sano jir ah ayay ahayd in uu xilkaasi sii hayo tan iyo sanadka 2022-ka, kadib markii mar labaad dib loogu doortay in uu hogaamiyo Bangiga Adduunka sanadkii 2017-kii.