analyst roger diwan is at the meeting.eal is crucial for saudi arabia, which is selling shares in oil giant saudi aramco and needs higher prices to make that a success. opec 0pec once to reaffirm their willing to continue to manage the market. i think saudi arabia wants to show it is still in charge here and they wa nt to ta ke is still in charge here and they want to take the lead both with the ipo today and show some leadership in this meeting and need to try and get the organisation to agree to another cut. simon watkins is an independent oil analyst and author. hejoins me now. simon, it's interesting, whenever they have these 0pec meetings, the anticipation production cards tend to cause the price to rise and in some cases quite significantly, and thenit some cases quite significantly, and then it falls back slightly. why is that? -- then it falls back slightly. why is that? —— production cuts. then it falls back slightly. why is that? -- production cuts. there is a spike because of the announcement, but the announceme