Thailand’s Bhumibol Adulyadej, the only king ever born in the United States, came to the throne of his country in 1946 and at the time of his death, in October 2016, was the world’s longest serving monarch. The King Never Smiles, the first independent biography of Thailand's monarch, tells the unexpected story of Bhumibol's life and sixty-year rule—how a Western-raised boy came to be seen…