The crux of "Relentless" by Yashwant Sinha revolves around his life story, political career, and his reflections on India's political and economic landscape. The autobiography provides an insider’s perspective on the functioning of the Indian government, economic reforms, foreign policy, and the challenges within political parties.

Key Themes:

1. Journey from Bureaucracy to Politics:

   • Sinha recounts his transition from a successful career in the Indian Administrative Service (IAS) to a prominent political figure, initially with the Janata Party and later with the Bharatiya Janata Party (BJP).

2. Economic Reforms:

   • As Finance Minister, Sinha played a significant role in India's economic reforms during the 1990s and early 2000s. He provides insights into critical policy decisions, including managing the balance of payments crisis and implementing liberalization measures.

3. Foreign Policy Leadership:

   • Sinha's tenure as External Affairs Minister is highlighted, focusing on India's diplomatic challenges and strategies, particularly regarding neighboring countries and global geopolitics.

4. Critique of Contemporary Politics:

   • The autobiography critically examines the internal dynamics of the BJP, especially under Prime Minister Narendra Modi's leadership. Sinha discusses his growing disillusionment with the party's direction and its approach to governance and democracy.

5. Advocacy for Democratic Values:

   • Sinha emphasizes his commitment to democratic principles, transparency, and accountability in governance. His departure from active politics is portrayed as a stand against what he perceives as the erosion of democratic values in contemporary India.

Crux:

"Relentless" is a candid and reflective narrative that captures Yashwant Sinha's enduring dedication to public service, his key roles in shaping India's economic and foreign policies, and his concerns about the evolving nature of Indian politics. The autobiography presents a balanced mix of personal anecdotes, political insights, and policy discussions, offering readers a comprehensive view of Sinha's life and the challenges he faced throughout his career. It is a testament to his unwavering commitment to the principles of good governance and democracy.