However , India withdrew from the process of negotiations by September 1976 as both nations grew apart after the killing of Sheikh Mujib and establishment of military rule . Bangladesh protested India 's unilateral action at a summit of the Non-Aligned Movement ( NAM ) and at the 31st session of the U.N. General Assembly . At the urging of other nations and the U.N. , both India and Bangladesh agreed to resume dialogue , but with no results
killing of Sheikh Mujib
Assassination of Sheikh Mujibur Rahman
Sharing the water of the Ganges