The death toll from Monday's quakes, which struck in the early morning, passed 17,000 on Thursday across both countries.
It was the biggest natural disaster to strike the region since 1999, when a similarly powerful quake killed more than 17,000 people in Turkey.
People, whose relatives are trapped under the rubble, react in the aftermath of a deadly earthquake in Kahramanmaras, Turkey, February 8, 2023.
An aerial view shows tents placed at a stadium in the aftermath of the deadly earthquake, in Kahramanmaras , Turkey, February 9, 2023.
Syria overwhelmed In Syria, relief efforts are complicated by a conflict that has partitioned the country and wrecked its infrastructure.