China’s action follows Modi’s vow to isolate Pakistan internationally in the wake of the deadly attack on an Indian Army base in Indian-administered Kashmir, a Muslim majority region, which killed 18 jawans on Sept. 18. Ratified by both countries in 1960, the Indus Waters Treaty gives India and Pakistan control over three rivers flowing within their territories. Control over the three “eastern” rivers — the Beas, the Ravi and the Sutlej — went to India. Control over the three “western” rivers — the Indus, the Chenab and the Jhelum – went to Pakistan. stepped-up for its “iron brother” Pakistan by blocking a tributary of the Brahmaputra River flowing into India from China a scant week after Indian Prime Minister Narendra Modi said his government will review the Indus Waters Treaty with Pakistan. -