Since the attacks, people around the world have expressed their deep sympathy with America in its hour of tragedy. World public opinion also stands solidly behind America's rescue efforts and determination to fight terrorism. There is, however, widespread concern that the wave of patriotism currently sweeping America could degenerate into a "Clash of Civilizations."
各國輿論對美國遭此大難衷心哀悼，也對美國社會和政治人物在救災及反恐怖行動上表現出的沈穩內斂，給予高度肯定；但對於民氣沸揚的愛國主義是否將激化成「文明的衝突」，則顯得憂心忡忡。