The United Nation's Food and Agriculture Organization is holding an extraordinary meeting in Rome sparked by global fears about high food prices.Today's meeting will include Russian grain executives. Moscow banned exports after its harvest was hit by drought. Flooding in Pakistan and China has added to pressure on the market.Price rises have already sparked riots in Mozambique and are prompting fears of a massive price spike similar to that of 2007-8. The UN said delegate of the meeting will share information on recent market instability and examine the role of market information and transparency for crops such as grains and rice.