Mattis Handshake Defense Secretary Jim Mattis shakes hands with Ukrainian President Petro Poroshenko during an Independence Day parade in Kyiv, Ukraine, Aug. 24, 2017. Defense ministers from several nations attended the event. DoD photo by Air Force Staff Sgt. Jette Carr SHARE: Download: Full Size (0.69 MB) Credit: Jette Carr VIRIN: 170824-D-GY869-0895C.JPG Photo Gallery