11 November 2017. In September-October 2017, the Syrian Arab Army (SAA) and its allies broke the ISIS siege on Deir Ezzor city and liberated it as well as established control over the cities of al-Bukamal and al-Mayadin in the same province.

SOUTH FRONT

https://southfront.org/battle-for-deir-ezzor-city-from-siege-to-liberation-impact-on-syrian-war

At industryabout.com:

Syria and Iraq War Industrial Map