The most salient and overwhelming of these conflicts is, of course, the one between India and Pakistan. Soon after the partition, the two countries got embroiled in a conflict over the fate of Kashmir. The Pakistani government claimed that Kashmir belonged to it. Wars between India and Pakistan in 1947-48 and 1965 failed to settle the matter.

Which international organization was involved in the signing of the Indus Water Treaty between India and Pakistan?

World Bank

India and Pakistan also have had problems over the sharing of river waters. Until 1960, they were locked in a fierce argument over the use of the rivers of the Indus basin. Eventually, in 1960, with the help of the World Bank, India and Pakistan signed the Indus Waters Treaty which has survived to this day in spite of various military conflicts in which the two countries have been involved.