The D Brief: Rebels take another Syrian city; China’s big hack; Next DepSecDef?; NatSec poll results; And a bit more.

Syrian troops retreat from HamaNew: Just a week after taking Aleppo, jihadists and rebels seized another major city in Syria on Thursday. Government troops confirmed their departure from the west-central city of Hama on Thursday after forces led by Hayat Tahrir al-Sham entered the city center, al-Jazeera reported on location. But it’s not just HTS in Hama, Aleppo, and the Idlib countryside. “Other groups backed by Turkey and based in Syrian territory just south of the Turkish bo