On June 25, the Syrian army and allied forces began their long-awaited North-west Aleppo offensive, also nicknamed the "Castello Operation". The ultimate goal of the offensive was to cut the Castello highway, which is the last supply route for rebels inside the city, thus fully encircling remaining opposition forces. The Syrian armed forces also looked to re-capture the Anadan plains and its towns, along with rebel-held districts in the north-west of the city. On July 7, the Syrian army imposed fire control over the Castello highway, as they advanced to within 1 km of the last rebel supply route into Eastern Aleppo, after capturing the Southern Mallah farms from the Al Nusra Front and other forces. On July 11, Jabhat Al-Nusra launched an offensive inside Aleppo city capturing 10 buildings near the Al-Morour building (police station); however, this offensive was repelled and the SAA retook control of all lost buildings. On July 17, the Syrian Army reached and captured the Castello highway, tightening the blockade of the rebel-held eastern Aleppo.
On 27 July, the Army officially declared it had cut off all rebel supply routes into Aleppo.
Map after the siege of rebel held area: https://pbs.twimg.com/media/CotYNNwXYAAVmTe.jpg
