event. >> facebook says they don't know who is behind these accounts. everyday includes russia may be behind some of the activity. sthaf received a private briefing earlier this week from facebook officials. the committee is holding an open hearing on social media later today. >> listen, this is going to be a process of companies beginning to identify areas of concern. it's important this is the start of a collaboration between government and these companies to address concerns that they have and we have about the use of their platforms. >> i want people that do this to have a priechls i will be introducing thursday a sanctions bill against russia, everything but the kitchen kichg i sings in it. it will be the sanctions bill from hell. every other country sharing in