A man warms himself at a fire next to barricades in front of an entrance of the Ukrainian regional office of the Security Service in Luhansk, 30 kilometers (20 miles) west of the Russian border, in Luhansk, Ukraine, late Saturday, April 12, 2014. Ukrainian Interior Minister Arsen Avakov described the unrest as "Russian aggression" and said Ukraine's security officials would be gathering for an extraordinary meeting late Saturday evening. (AP Photo/Igor Golovniov), APTOPIX