books.google.co.jp - This report summarizes Yemen's domestic situation, foreign relations, and ties with the United States. It will be updated as significant developments occur. With limited natural resources, a crippling illiteracy rate, and high population growth, Yemen faces an array of daunting development challenges...https://books.google.co.jp/books/about/Yemen_Background_and_U_S_Relations.html?hl=ja&id=_nfYEtsxEHsC&utm_source=gb-gplus-shareYemen: Background and U.S. Relations
