Two Mi-24 helicopters have been downed in Slavyansk, while one Mi-8 helicopter was damaged and forced to land, the Ukrainian Defense Ministry says. Friday morning Ukrainian army began a special operation against pro-autonomy activists in the eastern town of Slavyansk. READ MORE: http://on.rt.com/kxxbel LIVE UPDATES: http://on.rt.com/1q9y34<br /><br />COURTESY: RT's RUPTLY video agency, NO RE-UPLOAD, NO REUSE - FOR LICENSING, PLEASE, CONTACT http://ruptly.tv<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 /><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.