Kathmandu. Former Prime Minister Sher Bahadur Deuba has congratulated the newly appointed Prime Minister Balen Shah. In a post made through social media, Deuba extended best wishes for a successful tenure to Shah.He wrote, 'Heartfelt congratulations to the senior leader of the Rastriya Swatantra Party, Balendra Shah, on being appointed Prime Minister, and best wishes for a successful tenure. Also, congratulations and best wishes for success to all the cabinet members appointed today.'Shah was appointed to the post of Prime Minister on Friday. He has already taken the oath of office and secrecy today....