Essentially, the GCC created an Arab League group to monitor what's going on in Syria. The Syrian National Council - based in North Atlantic Treaty Organization (NATO) member countries Turkey and France - enthusiastically supported it. It's telling that Syria's neighbor Lebanon did not.
When the over 160 monitors, after one month of enquiries, issued their report ... surprise! The report did not follow the official GCC line - which is that the "evil" Bashar al-Assad government is indiscriminately, and unilaterally, killing its own people, and so regime change is in order.