Answer: China
Notes: China has revealed a major upgrade in its undersea nuclear strength with the Type 096 Tang-Class submarine. It is a nuclear-powered ballistic missile submarine (SSBN) designed and built by China for strategic nuclear deterrence. The submarine is larger and stealthier, with a submerged displacement of about 20,000 tonnes, similar to United States Ohio-class submarines. It uses advanced noise-reduction technologies to reduce detection by enemy forces.
