The nuance there is that Beria made those claims in private and did not want that to be known. At that moment he would score more political points presenting hi

The nuance there is that Beria made those claims in private and did not want that to be known. At that moment he would score more political points presenting himself as a hardliner. It was something the author of that book found out almost by accident doing the research about his private life. If not for the excellent quality of the other material in that book I would have not really paid much attention to what Beria had to say about his plans