With regards to unresolved issues in the negotiations, he called for the agreement to strike a balance between the leadership role of developed countries and the increasing responsibility of developing countries to take action in line with their capabilities and respective levels of development. This meant that the vexing issue of differentiation should be applied differently across the various pillars of the agreement in a manner that did not undermine the integrity of the collective effort. He also insisted that the agreement needed to be credible in responding to rapidly escalating climate impacts, and called for the inclusion of regular, five-year cycles for Governments to review, assess and strengthen national commitments overtime in line with science.