Ban also told staffers that the UN remains an important body addressing global challenges and issues.
The 62-year-old South Korean diplomat officially took over as UN chief, replacing Kofi Annan, on January 1.
The eighth secretary-general in the history of the United Nations, he has pledged to work to strengthen the UN's three main areas of focus -- security, development, and human rights -- to help make the world more peaceful and prosperous.
2006 In Review
LOOKING BACK: A photo gallery of the key news events of 2006. ...more