In the 21st century, water has become more important in the world. The book "Water Geopolitics and Heartland Blue" seeks to answer some doubts that have arisen about how this vital element will be addressed by states that, in one way or another, share surface, underground and even frozen water basins. For this purpose, two specific cases were selected, the Guaraní Aquifer and Patagonia, which within the southern cone of America correspond to two of the largest reserves that currently exist and for this, the author seeks to analyze the actions of the countries involved. in them: Argentina, Brazil, Uruguay and Paraguay in the Guaraní Aquifer
Chile and Argentina in Patagonia, between the years 1990 - 2012.