UN Secretary-General Ban Ki- moon said here on Wednesday that the strong political will is crucial for a stronger United Nations in dealing with global issues, such as climate change. Ban, who just returned from his six-day trip to China and Mongolia, told his monthly press conference 'We need a stronger political will and strengthened political will.' 'These are crucially important for member states,' the secretary- general said. 'Climate change was the major focus of my trip to Asia,' he said. 