Carter Visits Berlin Holocaust Museum U.S. Defense Secretary Ash Carter tours the Holocaust museum in Berlin, June 22, 2015. Carter also gave a speech at Allianz Forum while in Berlin as part of a European trip to meet with defense leaders and participate in his first NATO ministerial as defense secretary. SHARE: Download: Full Size (0.04 MB) Credit: VIRIN: 409586-J-OKZ94-352.jpg Photo Gallery