It is China that provided Pakistan with the blueprint to build a nuclear weapon, in early 1980s, a small, reliable armament that could be delivered on India by attack aircraft or missile, according to a new book.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/china-gave-pak-n-blueprint
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/indian-express-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/peace-and-disarmament
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/nuclear-weapons
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/afghanistan
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/china
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pakistan