The document discusses the "War over Water" which refers to a series of confrontations between Israel and its Arab neighbors from 1964 to 1967 over control of water sources in the Jordan River basin. The 1949 Armistice Agreements created demilitarized zones on the Israel-Syria border, with the largest zone stretching from the Sea of Galilee to the Yarmuk River where the borders of Israel, Jordan and Syria converged. Sharing the waters of the Jordan–Yarmuk system between the countries became a major problem. In 1953, Israel began construction of an intake for its National Water Carrier in the demilitarized zone, exacerbating tensions over water rights.