**FILE** In this Dec. 25, 2008 file photo released by China’s Xinhua News Agency, soldiers of Chinese navy special force carry out an anti pirate drill on the deck of DDG-171 Haikou destroyer in Sanya, capital of South China’s Hainan Province. China said Tuesday, Jan. 20, 2009, that its overall security situation had improved over the past year, although it remained alert to separatism in Tibet and Xinjiang and firmly opposed to U.S. arms sales to Taiwan. (AP Photo/Xinhua, Zha Chunming, File)