BEST FOR BACKGROUND INFO. If there's a Congressional Research Service (CRS) report on your topic, you're in luck. CRS writes brief, non-partisan, reliable reports to help members of Congress understand policy issues.
BEST FOR SCHOLARLY RESEARCH. The best place to go for peer reviewed journal articles in political science & international relations. TIP: Limit your search to scholarly journals, because this database also includes conference papers (do not use!).
BEST FOR EXPLORING DIFFERENT POLITICAL PERSPECTIVES. Search for reports & commentary from top foreign policy think tanks. TIP: Check each think tank's political perspective here.