President Lee Jae Myung and first lady Kim Hea Kyung arrive at Chinggis Khaan International Airport near Ulaanbaatar, Thursday (local time). Yonhap

ULAANBAATAR — President Lee Jae Myung arrived in Ulaanbaatar on Thursday on a state visit that will include a bilateral summit with Mongolian President Ukhnaagiin Khurelsukh.

Lee's trip marks the first state visit to Mongolia by a Korean president in 15 years, as Seoul seeks to strengthen cooperation with the resource-rich country in supply chains, including those involving rare earths.

On the first day of his three-day visit, Lee will hold a summit with the Mongolian president, during which the two leaders are expected to declare a "golden era" of bilateral ties, presenting a shared vision for future cooperation.

Lee will also attend a business forum aimed at exploring new areas of cooperation.