[Also stresses that it is important that the high-level task force and the Working Group, in the discharge of their mandates, take into account the need:] To strive for greater acceptance, operationalization and realization of the right to development at the international level, while urging all States to undertake at the national level the necessary policy formulation and to institute the measures required for the implementation of the right to development as an integral part of fundamental human rights, and also urging all States to expand and deepen mutually beneficial cooperation in ensuring development and eliminating obstacles to development in the context of promoting effective international cooperation for the realization of the right to development, bearing in mind that lasting progress towards the implementation of the right to development requires effective development policies at the national level and a favourable economic environment at the international level;