The rescue and recovery efforts in Syria and Turkey are under way after the most powerful earthquake to strike the region in almost a century killed nearly 5,000 people, left thousands more injured and flattened thousands of buildings and homes. The magnitude 7.8 quake and its aftershocks have unleashed a humanitarian disaster of unfathomable proportions. Governments around the world are pledging assistance, deploying search teams, medical squads and equipment, and offering aid, as families who have lost their homes endure near-freezing temperatures. Track updates here.