The Saudi newspapers commented today editorially on a number of topics. Here are the headlines of the newspapers: -King Abdullah calls for performing Istiska prayers -Prince Sultan receives call from Kuwaiti Crown Prince -Arab League denies existence of differences with the African Union -Agreement between Khartoum and Justice and Equality Movement -Tehran sets conditions for conducting dialogue with Washington -No agreement on Gaza without settling problem of Shaleet, says Olmert --more