A "Venom" military helicopter is displayed during NAVDEX in Abu Dhabi, the United Arab Emirates, on Feb. 19, 2013. The biennial International Defense Exhibition and Conference (IDEX) 2013, which starts here on Feb. 17, doubled in size compared to 2011 and puts this year a special focus on naval defense and unmanned aerial systems. This year's IDEX hosts NAVDEX, a special platform for the navy ships. (Xinhua/An Jiang)
