His Majesty Sultan Haji Hassanal Bolkiah Mu'izzaddin Waddaulah ibni Al-Marhum Sultan Haji Omar 'Ali Saifuddien Sa'adul Khairi Waddien, Sultan and Yang Di-Pertuan of Brunei Darussalam, has consented to send a congratulatory message to Her Excellency Han Seong-sook on the occasion of her appointment as the Prime Minister of the Republic of Korea.