Bill Clinton allegedly marched into Vanity Fair’s office and “threatened” staff not to write any articles about “his good friend” Jeffrey Epstein’s sex trafficking allegations, RadarOnline.com has learned. The accusations were made by Epstein and Prince Andrew’s accuser, Virginia Roberts-Giuffre,in uncovered documents made public on Thursday. Giuffre made the allegations in an email from May 2011, in which she discussed an interview to promote her planned tell-all book. She claimed Clinton “walked into VF and threatened them not to write sex-trafficking articles about his good friend JE,” she …