This paper argues the Government in Exile (GIE), the first government of independent Bangladesh, played an important role in framing the founding moment in legal terms. The GIE's constitutional warfare through its adherence to legalism, and subsequent internationalization of the conflict significantly shaped the independence movement of 1971. The GIE was composed of leaders who were lawyers, economists and other intellectuals who sought refuge in neighboring India. The agency of the founders and their allegiance to constitutional principles catalyzed the founding moment, oversaw the transition to an independent state and ultimately led to a swift adoption of a constitution that endures despite much instability. This national struggle of 1971 also played out in the international arena. In the process, lawyers from the so-called Third World articulated, reshaped, and generated new debates about international legal principles such as sovereignty, territoriality, and self-determination (and criterion for legitimacy of exiled governments)—most of which were considered to be well-settled at the time.