HALIFAX FORUM U.S. Defense Secretary Leon E. Panetta makes an opening statement as Canadian Defense Minister Peter MacKay, left, listens at the Halifax International Security Forum in Halifax, Nova Scotia, Nov. 18, 2011. Panetta stressed the importance of international alliances to help combat terrorist organizations worldwide. SHARE IMAGE: Download Image: Full Size (0.06 MB) Photo By: VIRIN: 411341-C-XOT45-114.jpg Photo Gallery