Scholar Nicolai Petro, author of the book "The Tragedy Of Ukraine"

Scholar Nicolai Petro discusses the overlooked influence of Ukraine's far-right nationalist movement and former German Chancellor Angela Merkel's recent admission that the Minsk Accords -- the international formula for ending the post-2014 Donbas civil war -- "was an attempt to give Ukraine time" to prepare for a conflict with Russia, rather than make peace. Petro is the author of the new book, "The Tragedy of Ukraine."