As Pakistanis die in fresh Mediterranean tragedy, a question lingers: Why? - 21 Pakistanis among survivors in Moroccan boat tragedy: FO - Dead Calm: Killing in the Med? -- the a migrant boat disaster that became a Greek tragedy - Lost at sea: New constraints hinder Mediterranean rescuers - 'Traumatized' survivors of Mediterranean rescue say dozens died on journey from Libya, aid group reports - Survivors of rescued Mediterranean ship say dozens died during the voyage - Survivors of Mediterranean rescue say about 50 people died on the trip from Libya, aid group reports - Survivors say 60 people have died in the Mediterranean after migrant vessel's motor broke