Jihadists and their allies cut a major highway linking the main cities of Damascus and Aleppo on Thursday after launching an offensive against government forces in Syria's northwest, a war monitor said. "Hayat Tahrir al-Sham (HTS) and allied factions cut off the Damascus-Aleppo international M5 highway... in addition to controlling the junction between the M4 and M5 highways," said the Syrian Observatory for Human Rights. FRANCE 24 terrorism expert, Wassim Nasr tells us more.