One of Pope Francis’s top advisers said that the pontiff sees the current world situation comparable to that of the Cuban missile crisis, World War II, or 9/11 – and that to fully understand the papal encyclical released on Sunday, it’s necessary to acknowledge “we’re on the brink.” “Depending on your age, what was it like to hear Pius XII deliver his Christmas messages during World War II?” said Cardinal Michael Czerny on Monday. “Or how did it feel when Pope John XXIII published Pacem in Terris? Or after the 2007/2008 crisis, or after 9/11? I think you need to recover that feeling in your stomach, in your whole being, to appreciate Fratelli Tutti.”