Enriched fuel for the PWRs will be imported from China. Pakistan's concentration is on weapons technology, particularly the production of highly enriched uranium suitable for nuclear weapons, utilising indigenous uranium. It has at least one small centrifuge enrichment plant. In 1990 the US Administration cut off aid because it was unable to certify that Pakistan was not pursuing a policy of manufacturing nuclear weapons. In 1996 USA froze export loans to China because it was allegedly supplying centrifuge enrichment technology to Pakistan.
Indian opinion is in no doubt about Pakistan's nuclear weapons capability.
Pakistan has made it clear since early 1996 that if India staged a nuclear test, it had done the basic development work and would immediately start assembling its own nuclear explosive device. It is assumed to now have enough highly-enriched uranium for up to 40 nuclear warheads. Pakistan test fired a long-range missile capable of reaching Madras in southern India, pushing home the point by naming it after a 12th Century Muslim conqueror. This development removed India's main military advantage over Pakistan. Pakistan's security concerns derive from India's possession of a nuclear weapons capability, its development of short and intermediate-range missiles and, since their partition in 1947, its defeat by India in two of three wars, notably in East Bengal, now Bangladesh.