VO Thai King, Queen and Princess sent messages of condolence to Lao President Choummaly Sayasone to share in the mourning over the Lao Air Force plane .
VO Myanmar president, Chinese Premier send condolence messages INTRO: Myanmar President, Thein Sein and Chinese Premier, Li Keqiang sent messages .
VO Russian, Belarus, US leaders send condolences over plane crash in Xieng Khuang INTRO: President Vladimir Putin of Russia has sent a message to .