the same time, have a strategy for surviving a nuclear war. Pakistan has built hard and deeply buried storage and launch facilities to retain a second strike capability in a nuclear war. In January 2000, two years past after the atomic tests, US intelligence officials stated that previous intelligence estimates "overstated the capabilities of India's homegrown arsenal and understate those of Pakistan". The United States Central Command commander, General Anthony Zinni told the NBC that longtime assumptions, that "India had an edge in the South Asian strategic balance of power, were questionable at best. Don't assume that the Pakistan's nuclear capability is inferior to the Indians", General Zinni quoted to NBC. It was confirmed that Pakistan has built Soviet-style road-mobile missiles, state-of-the-art air defences around strategic sites, and other concealment measures. In 1998, Pakistan had 'at least six secret locations' and since then it is believed Pakistan may have many more such secret sites. In 2008, the United States admitted that it did not know where all of Pakistan's nuclear sites are located. Pakistani defence officials have continued to rebuff and deflect American requests for more details about the location and security of the country's nuclear sites. Personnel In 2010, Russian foreign ministry official Yuriy Korolev stated that there are somewhere between 120,000 and 130,000 people directly involved in Pakistan's nuclear and missile programs, a figure considered extremely large for a developing country. Alleged foreign co-operation Historically, the People's Republic of China (PRC) has been repeatedly charged with allegedly transferring missile and related materials to Pakistan. Despite China strongly dismissing the charges and accusations, the United States alleged China to have played a major role in the establishment of Pakistan's atomic bomb development infrastructure. There are also unofficial reports in Western media that the nuclear weapon technology and the weapon-grade enriched uranium was transferred to Pakistan by China. China has consistently maintained that it has not sold any weapon parts or components to Pakistan or anyone else. In August 2001, it was reported that US officials confronted China numerous times over this issue and pointed out "rather bluntly" to Chinese officials that the evidences from intelligence sources was "powerful." But they had been rebuffed by the Chinese, who have retorted by referring to the US support for Taiwan's military build-up which Beijing says is directed against it. The former US officials have also disclosed that China had allegedly transferred technology