Declassified documents throw new light on the circumstances and reasons for partition of India.

Sources -

The Shadow of the Great Game - The Untold Story of India's Partition - Narendra Singh Sarila

War and Diplomacy in Kashmir, 1947-48 - C Dasgupta

Foreign Relations of the United States, Diplomatic Papers, 1945, The British Commonwealth, The Far East, Volume VI

( https://history.state.gov/historicaldocuments/frus1945v06 )

Jinnah - His Successes, Failures and Role in History - Ishtiaq Ahmed

Pakistan's Foreign Policy 1947-2019 - Abdul Sattar

The Struggle for Pakistan - Ayesha Jalal

Pakistan Faces India - Aziz Beg

Islam, Politics and The State - Asghar Khan

Zulfikar Ali Bhutto - Six Steps to Summit - Kamaleshwar Sinha

South Asian Insecurity and the Great Powers - Barry Buzan, Gowher Rizvi, Rosemary Foot, Nancy Jetly