ROGER MOORHOUSE is a historian of the Third Reich. He is the author of the acclaimed BERLIN AT WAR, KILLING HITLER and THE DEVILS' ALLIANCE and has been published in over 20 languages. He has contributed to HE WAS MY CHIEF, I WAS HITLERS CHAUFFEUR, WITH HITLER TO THE END and HITLERS LAST WITNESS (all Frontline Books). He is also a tour guide, a book reviewer and a visiting professor at the College of Europe in Warsaw. You can follow him on Twitter at @Roger_Moorhouse