Riyadh Economic Forum will hold its 5th session here on Dec. 17-19. Saad Al-Mua'jel, Chairman of the forum's Board of Trustees, said in a statement Saturday that the session will discuss recommendations on transport within cities; technical education and vocational training and their appropriateness for the developmental needs of manpower; food security between local agriculture and import and foreign agricultural investment; the assessment of investment in the Kingdom; and balanced development of the Kingdom's provinces.