[citation needed] On 15 August 1947, the day of Indian Independence he was sworn in as Home Minister in the cabinet of the state of Punjab.
"His debates at the UN Security Council on Bangladesh's cause, when East Pakistan liberation war (1971) was in full swing, were impressive," attests Former Indian ambassador to the United Nations, Narendra P Jain, "He proved to be more than just a match for his then Pakistani counterpart Zulfikar Ali Bhutto.
On 9 August 1971, he signed "The Treaty of Peace, Friendship and Cooperation between the USSR and the Republic of India" which provided for closer contacts between the two countries in economic, political cultural and other fields.
This treaty was binding for 20 years and was co signed by Andrei Gromyko[6] He led the Indian delegation to the UN general assembly in 1971 to explain India's position in the ongoing war with Pakistan.
[7][8] George H. W. Bush, who at the time was the US Ambassador to the UN and led the US delegation at the UN security council demanded an unconditional cease fire by India to which Swaran Singh responded, "this one sided and partisan attitude of the distinguished representative of the United States has shocked and surprised us.
Right from the beginning of this unfortunate situation that has arisen in the subcontinent, India had been asking for a political settlement acceptable to elected and acknowledged representatives of the people of Bangladesh.
"[9] On 16 December 1971, East Pakistan troops there surrendered to joint forces of Bangladesh and India, who had seized the capital city of Dacca (now Dhaka).
[10] [11] Sardar Swaran Singh was chairperson of the committee entrusted with the responsibility of studying the Constitution of India in 1976 during the national emergency.
He was a member of the eminent persons group on South Africa sponsored by the Commonwealth Institute that consisted of Malcolm Fraser who had been Prime Minister of Australia for eight years, General Obasanjo of Nigeria, Lord Barber who had been Edward Heath's Chancellor of the Exchequer and was also chairman of the Standard Chartered Bank, Dame Nita Barrow, Reverend Scott and John Malecela, a Tanzanian former government minister.