Liberia's new president George Weah has promised to live up to the expectations of the Liberians. (Photo: Xinhua)Former Ballon d'Or winner and international soccer star George Weah has sworn in as the president of Liberia on Monday.The new president said “Xie Xie”, meaning “Thank You” in Chinese, when thanking China for the contributions to Liberia’s development in his inaugural speech.He