In the East China Sea, Beijing Tests Japan's Resolve

China's long-standing rivalry with Japan in the East China Sea is heating up once again. In addition to their standing disputes over the Diaoyu/Senkaku Islands and Beijing's attempts to break through the first island chain, it is now looking more and more likely that Japan will wade into the South China Sea conflict as well. China has been watching these developments with growing concern and is turning to new capabilities and tactics in the East China Sea in an effort to outmaneuver its Japanese adversary -- and to remind Tokyo that interfering in the South China Sea will have consequences closer to home....