South Koreans across the country are set to celebrate Monday the 66th anniversary of independence from Japanese colonial rule.
The government of South Korea, formally called the Republic of Korea, was founded August 15, 1948.
The Yonhap news agency says President Lee Myung-bak is expected to call for nationwide harmony and unity in his National Liberation Day speech. It says U.S. President Barack Obama has sent a congratulatory telegram to Mr. Lee.
The two Koreas, divided shortly after the 1945 liberation, were engaged in a three-year war beginning in 1950. They are still technically at war, with no peace treaty signed at the end of the war in 1953.
South Korean news media also report that President Lee will leave for a three-nation Asian tour next week that will take him to Mongolia, Uzbekistan and Kazakhstan.
The presidential office said Sunday that Mr. Lee will meet with top officials of the three nations for talks on cooperation in energy, resources and health.