Ban Ki-moon, the former Secretary-General of the United Nations, played a crucial role in elevating the organization's global influence. During his tenure from 2007 to 2016, he focused on addressing pressing issues such as climate change, sustainable development, and international security. His leadership style emphasized diplomacy and multilateralism, seeking to foster collaboration among member states to tackle global challenges. Under Ban's guidance, the UN worked towards the establishment of the Sustainable Development Goals, a...