Iranian President Hassan Rouhani flew to Italy on Monday at the start of his first official visit to Europe, looking to sign multi-billion dollar contracts to help to modernize Iran's economy after years of crippling financial sanctions. Heading a 120-strong delegation of Iranian business leaders and ministers, Rouhani will spend two days in Rome before flying to France on Wednesday, hoping to burnish Tehran's international credentials at a time of turmoil across the Middle East.