The viability of international diversification involves balancing benefits and costs. This balance hinges on the degree of asset dependence. In light of theoretical research linking diversification and dependence. we examine international diversification using two measures of dependence: correlations and copulasWe document several findings. First. dependence has increased over time. Second, we find evidence of asymmetric dependence or downside risk in latin America. but less in the GS. The results indicate very little downside risk in East Asia. Third, East Asian and latin American returns exhibit some correlation complexity, Interestingly. the regions with maximal dependence or worst diversification do not command large returns. Our results suggest international limits to diversification, Tbey are also consistent with a possible tradeoff between intemational diversification and systemic risk.