The agreement split the Indus and its tributaries between the two countries and regulated water sharing. India was granted the use of water from three eastern rivers - Sutlej, Beas and Ravi - while Pakistan was granted most of the three western rivers - Indus, Jhelum and Chenab.

Pakistan closed its air space for Indian airlines and rejected New Delhi's suspension of a water sharing treaty on Thursday in retaliation for neighbouring India's response to a deadly militant attack in the Indian-ruled part of Kashmir.

Latest attack on tourists has inflamed one of Asia’s longest-running conflicts and raised fears of a confrontation