Brahma Chellaney is professor emeritus of strategic studies at the Centre for Policy Research in New Delhi and a former adviser to India's National Security Council. He is the author of nine books, including "Water: Asia's New Battleground."
Given differences in aims and objectives, membership provides little benefit


Shanghai Cooperation Organization defense ministers meet in Astana in April: China is increasingly in the driver's seat of the group. (Russian Defense Ministry Press Service via AP)
Brahma Chellaney is professor emeritus of strategic studies at the Centre for Policy Research in New Delhi and a former adviser to India's National Security Council. He is the author of nine books, including "Water: Asia's New Battleground."