"India is expanding a covert uranium enrichment plant that could potentially support the development of thermonuclear weapons, a defense research group said on Friday, raising the stakes in a regional arms race with China and Pakistan." "A civil nuclear cooperation deal with the United States, sealed in 2008, gave India access to know-how and fuel in return for a pledge - so far unfulfilled - to bring in U.S. firms to expand India's nuclear power generation capacity."