I read this book as soon as it was published in 1987. Two portions of it remain particularly interesting. First, there was the shadowy role of James Rafferty, whose primary job in the U. S. Embassy in Manila appeared to have been to carry out any and every request of First Lady Imelda Marcos, the Steel Butterfly, to keep her and President Marcos happy. Rafferty was the Embassy's fixer. Ambassador Sullivan didn't like him, and fired him, but Ambassador Byroade relied on him to him carry out tasks no one else would.
Second, Bonner concludes that the weight of the evidence (in 1987, mind you) was that Imelda Marcos and her brother, Kokoy Romualdez, were behind the assassination of Benigno Aquino at the Manila airport in 1983. Much additional evidence about the assassination has come to light since Bonner's excellent book.