The Keys of This Blood is a 1990 non-fiction geopolitical book by former Catholic Jesuit priest Malachi Martin.

Martin wrote this book as a geopolitical and georeligious analysis of the last decades of the 20th century. He identifies this period as the millennium end-game for a new world order, which has three main contenders. It will establish the first ever one-world government. Pope John Paul II [VATICAN] , Mikhail Gorbachev [RUSSIA - PUTIN] , and international business leaders [UN - NATO] are in competition to establish this one world government and that this competition will intensify around the turn of the 21st century (around 2000). The book further claims to be an inside account of what the pope is doing to win this geopolitical struggle and how he played an instrumental role in the collapse of the Iron Curtain.