Opera for Peace has announced that several of opera’s greatest stars are joining the organization as ambassadors and advisors. Tenor René Barbera and sopranos Elsa Dreisig and Joyce El-Khoury have become the organization’s newest ambassadors. Meanwhile, conductor Fabio Luisi, soprano Sondra Radvanovsky, and baritone Ludovic Tézier have signed on as Advisors; they join baritone Thomas Hampson and soprano Sumi Jo, who {…}