Both countries have constantly exchanged visits of high ranking officials and dignitaries. In 2005, Her Royal Highness Princess Sirindhorn visited the Republic of Korea in May. From 2006- 2008, Her Royal Highness Princess Chulabhorn had made visits to the Republic of Korea to sign agreements of cooperation with science and technology agencies of the Republic of Korea as well as to attend academic joint symposium. In addition to those visits, there were more than 50 visits from high ranking Thai officials to the Republic of Korea last year. There were also several high-level visits from the Korean sides during 2006 to 2008. Recently, during 31 May to 2 June 2009, H.E. Mr. Abhisit Vejjajiva, Prime Minister of Thailand led the Thai delegation to attend the ASEAN-Republic of Korea Commemorative Summit in Jeju, Korea.