Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pakistan began focusing on nuclear weapons development in January 1972, in response to neighboring India's development of nuclear weapons. On 28 May 1998, a few weeks after India's second nuclear test, Pakistan detonated five nuclear devices in the Chagai Hills in the Chagai district, Balochistan. Pakistan thus became the 7th country in the world to successfully develop and test nuclear weapons. Learn more about nuclear weapons and Pakistan's pursuit to obtain them in the following pages.