President Zardari has called another joint session of parliament on March 20. Sources said that the parliamentary committee’s suggestions regarding review of Pak-US ties would be taken up in the joint session. President Zardari already has met PM Gilani and COAS Gen Kayani a couple of days ago over the same matter. Later, the Troika held a meeting with coalition partners and all had unanimously decided that the Pak-US ties review and Nato supply resumption would be decided by parliament in a joint session in light of recommendations of the parliamentary committee set up for the purpose. The joint session starting on March 20 will continue for three days, said sources.