Categories Treaty Riyadh Arab Agreement for Judicial Cooperation اتفاقية الرياض العربية للتعاون القضائي Post author By admin Post date May 8, 1999 Arabic Ratified by Royal Decree 34/99. ← Royal Decree 33/99 Approving the Assignment by Alf Sumitomo Group of All its Rights and Obligations in the Petroleum Agreement signed on 14 May 1975 → Royal Decree 38/99 Approving the Accession of the Sultanate of Oman to the Convention on the Marking of Plastic Explosives for the Purpose of Detection