Possible witnesses to the alleged looting of billions of dollars from 1MDB (1Malaysia Development Berhad) are too scared to talk to US investigators because they fear retaliation, according the FBI (Federal Bureau of Investigation).Some people in "certain foreign countries" already assisting the criminal probe are concerned for their safety, while others say it’s too dangerous to cooperate, according to an FBI request to keep the names of its informants secret from the alleged maste