The 15th Pravasi Bharatiya Divas (PBD) convention kicks off today in Varanasi. Nearly 6,000 overseas delegates are flocking to the holy city to celebrate their Indian connection for three days. This is a good time to look at the evolving relationship between India and its 31.2 million diaspora living in 208 countries across the globe. About 70% of them live in nine countries, the US being home to 4.46 million, followed by Saudi Arabia (4 million), Malaysia (2.4 million), and the United Arad Emirates (2.8 million).