 During the build-up to the 2003 invasion of Iraq, Annan called on the United States and the United Kingdom not to invade without the support of the United Nations.In a September 2004 interview on the BBC, when questioned about the legal authority for the invasion, Annan said he believed it was not in conformity with the UN charter and was illegal.In 1998, Annan was deeply involved in supporting the transition from military to civilian rule in Nigeria.