KAHRAMANMARAS, Turkey—Five days after Kahramanmaras became the epicenter of back-to-back earthquakes measuring 7.7 and 7.6 on the Richter scale, the scope of destruction in the southern Turkish province almost defies belief. In central Kahramanmaras, entire neighborhoods have been flattened beyond recognition. Dazed survivors congregate near mountains of rubble that were once multi-story buildings, anxiously awaiting…