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Editor's Note: The following is the video and testimony transcripts from the March 4 hearing of the U.S. Senate Subcommittee on Europe and Regional Security Cooperation. Those called to testify include former Georgian President Mikheil Saakashvili, former U.S. Ambassador to Ukraine Steven Pifer, Damon Wilson of the Atlantic Council, Stephen Blank of the American Foreign Policy Council and Russian opposition leader Garry Kasparov.

Read and see the testimony here