US President Donald Trump have arrived in Italy ahead of meetings with Pope Francis and Italian leaders, on the third leg of his first international trip since taking office. <br/><br/>Trump's meeting with the head of the world's 1.2 billion Roman Catholics today comes after the pair sparred at a distance on issues including migration, climate change and Islam. Trump is due to spend less than 24 hours in Italy before flying to Brussels for talks with European Union and NATO Chiefs. <br/><br/>He will return to Italy tomorrow for a summit of the Group of Seven (G7) major industrialized nations in Sicily.