The UN fears up to 800 thousand civilians are still trapped in the ISIS-held part of Mosul, where the anti-terror operation is now raging. A similar situation was seen in neighbouring Syria a couple of months ago. Back then though, the UN raised concerns over the fate of a hundred thousand people in Eastern Aleppo, as Syrian forces tried to retake it from Al-Nusra terrorists. RT's Ilya Petrenko compares the battles for the two cities.br br RT LIVE br Subscribe to RT! br Like us on Facebook Follow us on Twitter Follow us on Instagram Follow us on Google+ Listen to us on Soundcloud: br RT (Russia Today) is a global news network broadcasting from Moscow and Washington studios. RT is the first news channel to break the 1 billion YouTube views benchmark.