Obama presidential candidate Robin Oakley gives speech in Obama . Obama : U.S. 's history offers hope for the future . `` People of the world - look at Berlin , where a wall came down , a continent came together , and history proved that there is no challenge too great for a world that stands as one , '' he said . Germany : Remove walls between religions , races , and the rich and poor . Trip is intended to shore up Obama 's foreign policy credentials .
Obama presidential candidate Robin Oakley gives speech in Obama . Obama : U.S. 's history offers hope for the future . Germany : Remove walls between religions , races , and the rich and poor . Trip is intended to shore up Obama 's foreign policy credentials .