President Asif Ali Zardari has condemned the blast near the Karachi airport, resulting in the death of two Chinese citizens.In a statement on Monday, he expressed grief over the demise of Chinese nationals and also commiserated with the bereaved families.The President said foes of the country want to disrupt Pakistan's progress and prosperity.He called for strict and effective action against culprits involved in this incident.He said his heart goes out to the Chinese citizens and their families in this hour of grief.Source: Radio Pakistan