6 Helsinki 1975 They will endeavour, in developing their co-operation as equals, to promote mutual understanding and confidence, friendly and good-neighbourly relations among themselves, international peace, security and justice. They will equally endeavour, in developing their cooperation, to improve the well-being of peoples and contribute to the fulfillment of their aspirations through, inter alia, the benefits resulting from increased mutual knowledge and from progress and achievement in the economic, scientific, technological, social, cultural and humanitarian fields. They will take steps to promote conditions favourable to making these benefits available to all; they will take into account the interest of all in the narrowing of differences in the levels of economic development, and in particular the interest of developing countries throughout the world. They confirm that governments, institutions, organizations and persons have a relevant and positive role to play in contributing toward the achievement of these aims of their cooperation. They will strive, in increasing their cooperation as set forth above, to develop closer relations among themselves on an improved and more enduring basis for the benefit of peoples. X. Fulfilment in good faith of obligations under international law The participating States will fulfil in good faith their obligations under international law, both those obligations arising from the generally recognized principles and rules of international law and those obligations arising from treaties or other agreements, in conformity with international law, to which they are parties. In exercising their sovereign rights, including the right to determine their laws and regulations, they will conform with their legal obligations under international law; they will furthermore pay due regard to and implement the provisions in the Final Act of the Conference on Security and Cooperation in Europe. The participating States confirm that in the event of a conflict between the obligations of the members of the United Nations under the Charter of the United Nations and their obligations under any treaty or other international agreement, their obligations under the Charter will prevail, in accordance with Article 103 of the Charter of the United Nations. All the principles set forth above are of primary significance and, accordingly, they will be equally and unreservedly applied, each of them being interpreted taking into account the others. The participating States express their determination fully to respect and apply these principles, as set forth in the present Declaration, in all aspects, to their mutual relations and cooperation in order to ensure to each participating State the benefits resulting from the respect and application of these principles by all. The participating States, paying due regard to the principles above and, in particular, to the first sentence of the tenth principle, “Fulfilment in good faith of obligations under international law”, note that the present Declaration does not affect their rights and obligations, nor the corresponding treaties and other agreements and arrangements.