Thailand's King Maha Vajiralongkorn has called his elder sister's bid to run for prime minister in March "inappropriate" and unconstitutional, likely sinking her candidacy for a populist opposition party.
Princess Ubolratana Rajakanya Sirivadhana Barnavadi, 67, stunned the nation when she announced on Friday she would be the sole prime ministerial candidate for the party, which is loyal to ousted ex-premier Thaksin Shinawatra.
