International Security Ranks First for Impact Factor among International Relations Journals in 2009.
Read more here: http://belfercenter.ksg.harvard.edu/publication/20241/
International Security Ranks First in the Institute for Scientific Information's 2005 "Impact Factor" Ratings
International Security (IS) ranks first in the 2005 "Impact Factor" rankings calculated by the Institute for Scientific Information (ISI), which also publishes the Social Science Citation Index.
This is the second consecutive year that IS has ranked first among journals of international relations.
Since 1996, IS has ranked first five times, more than any other journal. No other journal has ranked first more than twice—an honor shared by World Politics and International Organization. IS has been in the top five every year. Other journals that have ranked highly include Foreign Affairs, the American Journal of International Law, and International Studies Quarterly. The ISI ranks approximately fifty international relations journals each year.
The Impact Factor is a measure of how often articles in a given journal are cited. The ISI calculates it by counting the number of current-year citations of a journal's articles from the preceding two years and then dividing that number by the total number of articles published in that journal during the two previous years. Thus, the 2005 Impact Factor measures the average number of 2005 citations of articles published in 2003 and 2004.