Terrorism affects some countries more strongly than others, of course.
I think terrorism has made people more security conscious and wary of traveling and investing in certain areas, which arrests world economic development. At this point, we are experiencing a lull in international terrorism. I think many, especially in the United States, are unconcerned about terrorism or, in areas where terrorism and other forms of political voilence are more common, have become used to terror and counter measures. Over all, it is the responsibility of governments to ensure terrorism does not take a promenent role in international relations. By paying too much attention to terrorism and terrorists, governments risk legitimizing the violence or making it appear more effective or prevailant than it truly is.