Saudi newspapers commented today editorially on a number of local, regional and international topics focusing on the Quartet summit held in Riyadh on Wednesday, hoping that the summit would revive the joint Arab work and contribute to unifying the Arab ranks. Following are major headlines in this morning newspapers: - Crown Prince Sultan receives call from Kuwaiti Emir. - Arab interior ministers to meet in Beirut next week. - Mousa to visit Iraq next week. - Palestinian dialogue faces difficulties. - Israel to conclude deal for exchange of POWs. - Two American missiles kill 24 persons South of Pakistan. - Tehran is open for discussions on Afghanistan, says Iranian Vice-president. - Obama renews sanctions on Iran. - EU to extend operations against pirates. - Japan threatens to down N. Korean missiles. --MORE