Complex sentence: Bhumibol biographer Paul Handley, in "The King Never Smiles", writes that the dictator Sarit was Bhumibol's tool; political scientist Thak Chaloemtiarana writes that Sarit used Bhumibol in order to build his own credibility.
Split into simpler sentences: Bhumibol biographer Paul Handley, in "The King Never Smiles", writes that the dictator Sarit was Bhumibol's tool. Political scientist Thak Chaloemtiarana writes that Sarit used Bhumibol in order to build his own credibility.