India, April 17 -- Pope Leo blasted leaders who spend billions on wars and said the world was "being ravaged by a handful of tyrants", in unusually forceful remarks Thursday days after US President Donald Trump attacked him on social media.He also decried leaders who used religious language to justify wars and urged a "decisive change of course" in a meeting in the biggest city in Cameroon's anglophone regions, where a simmering conflict going back nearly a decade has left thousands dead. "The masters of war pretend not to know that it takes only a moment to destroy, yet often a lifetime is not enough to rebuild," he said. "They turn a blind eye to the fact that billions of dollars are spent on killing and devastation, yet the resources nee...