The Ultimatum unpacks one of the most explosive chapters in modern geopolitics: when a phone call between a U.S. president and a foreign leader reshaped alliances, threatened democratic norms, and nearly toppled a presidency. Drawing from deep analysis, insider testimony, and the tangled web of politics, pressure, and personal ambition, this gripping narrative reveals how Donald Trump's demand for a "favor" from Ukrainian President Volodymyr Zelenskyy became a flashpoint for impeachment—and a case study in the weaponization of foreign aid. At once a geopolitical thriller and a sobering critique of power misused, this book is essential reading for anyone trying to make sense of the crisis that redefined American foreign policy and tested the resilience of democracy itself.