Thai Prime Minister Prayut Chan-o-cha (L) and his wife hold up candles during the celebration for Thai Queen Sirikit on her 84th birthday in Bangkok, Thailand, Aug. 12, 2016. Queen Sirikit is affectionately deemed the "Mother of all Thais". Thai people celebrate the "National Mother's Day" -- the birthday of the Queen Sirikit. (Xinhua/Rachen Sageamsak)