This is the Presentation delivered by Prof. Joyeeta Gupta of Institute for Environmental Studies, Vrije Universiteit, Amsterdam at International Conference on 'Compliance and Liability in Climate Change Negotiations' organized by CSE on 1 March 2011 at New Delhi. The presentation is on fixing responsibilities involving Operationalizing legalities of climate change liability at a global scale and deals with the question of the possibility of fixing the liability in the international legal system.