The Italian Prime Minister Matteo Renzi has begun a two-day trip to Iran, the highest-ranking European leader to visit since world powers stuck a nuclear deal with Tehran last year.
He was greeted by President Rouhani, who visited Rome in January.
A 250-strong delegation from Italy is accompanying Renzi as he seeks to renews the country’s economic clout in Iran.
Italy used to be Iran’s main economic and commercial partner. Annual trade between the two countries peaked at around 7 billion euros. But a decade of nuclear-related sanctions saw the figure plummet to under two billion.