How to pronounce “symbion” in English

Hamas didn't disappear. It went from strength to strength.Decapitation doesn't work. They talk about Baader-Meinhof, and Symbionese Liberation Army, and some of the smaller armed groups and say, well, they were policed out.Well, they weren't policed out, but they did fizzle out because small groups that disturb middle-class children, as they were described by their East German paymaster,