The most obvious reason for increased worries about security in America is the challenge of meeting the threat of terrorism after the attacks of September 2001. But that can scarcely explain European nervousness and the protectionist reaction.
美国对其安全日渐增强的担心最显著的一个原因就是2001年9月恐怖袭击以来，它所面临的恐怖主义挑战。但这一理由却完全不能解释欧洲的紧张和保护主义反应。