Oman's State Council Member Ali Al-Issa'ee has stressed that the deeply rooted Muscat-Riyadh relations have been based on mutual respect, trust and constructive cooperation in service of the pan-Arab and Islamic causes since the 1970s and 1980s. He also noted that Omani Sultan Haitham bin Tariq's visit to the Kingdom of Saudi Arabia is a reflection of the strong ties between the two countries, highlighting the significance of the visit in opening new horizons of economic and investment cooperation.