A summit of Gulf Arab leaders on Tuesday demanded Iran end what they called interference in Gulf Arab affairs, reiterating the six U.S. allies' long-held mistrust of their regional rival.
A communique issued at the end of a two-day summit of the six-member Gulf Cooperation Council (GCC) also called on the international community to bring a swift end to massacres and violations of international law in Syria.
"The council expressed its rejection and condemnation of the continuing Iranian interference in the affairs of the Gulf Cooperation Council's states and called on Iran to stop these policies," the statement said.
On Syria, the statement, read out by GCC Secretary-General Abdulatif al-Zayani, added: "We ask the international community for serious and swift moves to stop these massacres and these severe attacks that contradict all religions and international laws and humanitarian principles."
The statement called on the international community "to provide all forms of urgent humanitarian aid" for the people of Syria.