LONDON (Reuters) - United Nations Secretary-General Kofi Annan said on Thursday African leaders must speak out against what he called the wrong policies of any governments on the continent. Annan told the Financial Times in an interview it was vital for African countries to break their silence to protect the continent's credibility in the eyes of the world. "What is important -- and what is lacking on the continent -- is (a willingness) to comment on wrong policies in a neighboring country," he said before attending a summit of the Group of Eight (G8) top industrialized nations in Scotland. Annan...