Covers studies about issues, including policy issues, related to international trade, factor movements, international finance, and open-economy macroeconomics. Studies about member countries of a geographic entity, for example Latin America, or a political and/or economic union that are treated as regions should be included here. They should be cross-classified under the appropriate categories in R1 if they are of interest to urban-regional economists. Studies about international political economy should be classified under the appropriate categories in F5. The F5 categories were established in 2006. Earlier studies were classified under F02, H56, or D74. Note that all categories in F include policy studies. There is no separate policy category in F.