On 2 April 2026, Her Royal Highness Princess Sirivannavari Nariratana Rajakanya graciously bestowed a royal vase of flowers as a gesture of congratulations to H.E. Mr. Sihasak Phuangketkeow on the occasion of his appointment as Deputy Prime Minister and Minister of Foreign Affairs. Group Captain Supat Kaewpha, Representative of the Royal Household Bureau (Division 918), was entrusted to present the royal floral arrangement on behalf of Her Royal Highness at the Buakaew Room, Ministry of Foreign Affairs.