Benedict XVI announced that the theme of World Youth Day in Brazil in 2013 will be "Go therefore, and make disciples of all nations" at his general audience this morning (video). The Catholic News Service reports that three Franciscans have barricaded themselves in their house in Tripoli to escape fighting between rebels and Gaddafi loyalists. The Chinese authorities have reportedly arrested dozens of underground priests and laity in the northwestern city of Tianshui. Gian Maria Vian, editor of L'Osservatore Romano, has criticised the BBC's coverage of World Youth Day in Madrid. Kathryn Jean Lopez asks if US Republican presidential candidate Rick Perry has a "Catholic problem". John Berkman argues that Catholic theologians should firmly denounce the practice of factory farming. And Michael Cook says he couldn't care less that the mainstream media ignored World Youth Day.