Feb. 26 (UPI) -- Børge Brende resigned his position as president and CEO of the World Economic Forum on Thursday after an investigation into his relationship with the late sex offender Jeffrey Epstein found "no additional concerns." André Hoffman and Larry Fink, co-chairmen of the WEF's board of trustees, said Alois Zwinggi will serve as interim president and CEO of the forum. Brende's "dedication and leadership have been instrumental during a pivotal period of reforms for this organization,