Saudi King Salman arrived with a large delegation on Monday in Ankara to start his three-day diplomatic engagement with Turkey.President Recep Tayyip Erdoğan received him at the airport, a gesture in response to Salman's receiving Erdoğan during his visit to Saudi Arabia in April last year.Following meetings with Turkish officials to discuss regional issues, Salman will attend the 13th Organization of Islamic Cooperation (OIC) Summit in Istanbul on April 14-15.