Nuclear weapons is a major topic of debate, not just recently with Iran, but between an area of the world that is sometimes overlooked, South Asia. The countries of interest are that of Pakistan, India, and China. While Pakistan isn't considered monsoon Asia, I still think this is a relevant article given the relationship between Pakistan-India and Pakistan-China.
PM Modi, and China both claim that their respective countries have a "No Fire First Policy." As one could deduce, this means that their nuclear arsenals are to be used only in a defensive manner. Pakistan has also been increasing production on their warheads, as well as working on missiles that could carry warheads. This could pose a problem for India, as it's seen as a threat for Pakistan, and Chnia.
Since India's independence, India has done a good job of remaining neutral and a major proponent of "non-power bloc" politics. India has managed to avoid affiliation during the Cold War, and has remained relevant in a developing world. It will be interesting to see how India, and the rest of the region will fare over the years with a growing nuclear arsenal and whatever issues may arise.
Source:
http://www.bbc.com/news/world-south-asia-32289368