The six-nation Gulf Cooperation Council called on arch rival Iran on Tuesday to stop meddling in the internal affairs of the group’s members. “Stop these policies and practises … and stop interfering in the internal affairs” of the Gulf nations, said a statement released at the end of the GCC annual summit in the Saudi capital Riyadh. The Sunni-led GCC also expressed concern over attempts by Shiite Iran to “instigate sectarian strife.” The GCC also called on Iran to “fully cooperate” with the International Atomic Energy Agency and work to resolve regional conflicts “peacefully,” adding that the GCC nations were still committed to a Middle East “free of weapons of mass destruction.”