left his diplomatic post when he was asked to join the Churchill cabinet, being appointed first as his military adviser from the Secretary of State for India of India Office on the affairs of the Indian Army. Khan later joined the Viceroy's Executive Council's cabinet as a labour minister, and played a crucial role in advising against the Independence of India, without addressing the push of Muhammad Ali Jinnah and other leaders for the Muslim question. In 1944–45, Churchill appointed Noon to the War Department, leading his own department alongside Sir Arcot Ramasamy Mudaliar that provided representation for British India in the Pacific War Council. In 1945, he was appointed as Permanent Representative of India to the United Nations, attending the first UN session in San Francisco, California. In 1946, Noon joined the Muslim League, led by Jinnah. He merged his faction of the Unionist Party into the Muslim League and garnered public support for the cause of Pakistan amidst opposition from Khizar Hayat Tiwana, who wanted to remain as Premier of the Indian Punjab. During the 1945 Indian general election, Noon's merging of the Unionist Party into the Muslim League played a decisive role. The Muslim League won by a landslide in the Punjab. Public service in Pakistan Governorship of East Bengal and Chief Minister of Punjab In 1947, Noon retained his constituency and became a Member of the National Assembly of Pakistan (MNA) of the Constituent Assembly of Pakistan, following the establishment of Pakistan as a result of the Partition of India. In October 1947, Jinnah, now Governor-General of Pakistan, appointed Noon as a special envoy and dispatched him to Saudi Arabia and the Islamic world to introduce Pakistan and explain the reasons for its creation, to familiarize the Muslim countries with its internal problems, and to get moral and financial support from the brother countries. Noon performed the role assigned to him in a successful manner. In 1950, Prime Minister Liaquat Ali Khan removed Feroz Noon from the Foreign Ministry, appointing him as the Governor of East Bengal. However, he was less interested in the politics of East Bengal and focused towards the provincial politics of Punjab in Pakistan, contesting with Mumtaz Daultana for the post of Chief Minister. He had little interest in strengthening the political program of the Muslim League in Bengal and offered no political action when the popular Bengali Language Movement took place