Brahma Chellaney is professor emeritus of strategic studies at the Center 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."
The flight of a Chinese reconnaissance balloon across the continental U.S. for four days before it was shot down has put into stark relief the fact that a rising China, not a declining Russia, poses the biggest threat to America.