POPE Francis, starting a trip to Hungary, pointedly warned of the dangers of rising nationalism in Europe and told the Budapest government that accepting migrants along with the rest of the continent would be a true sign of Christianity. In a hard-hitting speech to government leaders including Prime Minister Viktor Orban, who has had a series of run-ins with the European Union, Francis also urged a rejection of "self-referential forms of populism" and strictly nationalist interests. Francis called for a return to the "European soul" envisioned by those who laid the groundwork for modern Europe after World War Two, saying…