Concept:
During the post-World War II decolonisation era, foreign policy initiatives were driven by anti-colonialism, solidarity among newly independent nations, and Asian-African cooperation.
Step 1: Analyzing the options based on the provided passage and historical facts.
From the provided text and historical records of Indian Foreign Policy:
• India convened the Asian Relations Conference in March 1947 and an international conference in 1949 to support Indonesian independence from Dutch colonial rule.
• Pandit Jawaharlal Nehru, India's first Prime Minister and Foreign Minister, was the primary architect of India's foreign policy and played an instrumental role in bringing together the Asian and African nations.
• Nehru co-organized the historic Afro-Asian Conference held in Bandung, Indonesia, in 1955 (the Bandung Conference), which laid the foundation for Afro-Asian unity and the Non-Aligned Movement (NAM).
Therefore, Jawaharlal Nehru is the correct leader.