TV AND WEB RESTRICTIONS~*NONE***~<br/> <br />African and world leaders arrive at the headquarters of the African Union in Ethiopia on Saturday to celebrate the 50th anniversary of its founding.<br/> <br />US Secretary of State John Kerry was among those attending.<br/> <br />Washingron wants to strengthen its ties with the continent, home to some of the world's fastest growing economies, amidst concerns over growing Chinese influence.<br/> <br />Ethiopian Prime Minister Hailemariam Desalegn praised China's role in helping to develop the continent.<br/> <br />(SOUNDBITE) (English) ETHIOPIAN PRIME MINISTER, HAILEMARIAM DESALEGN, SAYING:<br/> <br />"It is encouraging to note that some of our friends and partners have given priority to infrastructure development in Africa in terms of their strategy partnership with our continent. In this regard I wish to take this opportunity to express my deepest appreciation to China for investing billions to assist us in our development endeavours."<br/> <br />Africa's first attempt to f
