The safety of over 400,000 people in Raqqa, Syria, where US-backed Syrian opposition forces are bombing ISIS, is of "deep concern" to the UN. The offensive has resulted in "an escalating number of civilian deaths” as well as damage to vital civilian infrastructure, the organization added. RT's Lizzie Phelan has more...<br /><br />RT LIVE http://rt.com/on-air<br /><br />Subscribe to RT! http://www.youtube.com/subscription_center?add_user=RussiaToday<br /><br />Like us on Facebook http://www.facebook.com/RTnews<br />Follow us on Twitter http://twitter.com/RT_com<br />Follow us on Instagram http://instagram.com/rt<br />Follow us on Google+ http://plus.google.com/+RT<br />Listen to us on Soundcloud: https://soundcloud.com/rttv<br /><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.