This document discusses the relationship between India, Pakistan, and Bangladesh since their independence. It notes that India and Pakistan have been neighbors since 1947 and have fought four wars, with the third war leading to the creation of Bangladesh. Kashmir is described as the biggest issue between India and Pakistan, as both countries claim sovereignty over the region. The document provides background on Kashmir, describing it as a disputed territory divided among India, Pakistan, and China. It also discusses some of the cultural, religious, and economic ties between the three South Asian countries while noting ongoing issues around borders, water rights, and terrorism.