In recent times, Russia and China are making efforts to challenge U.S. hegemony, looking for improvement of their influence over countries that previously were under U.S. influence. One of those countries is Brazil. Historically, Brazil and the U.S. share consistent relations that are extremely significant for both countries. Nevertheless, the Russian and Chinese influence in Brazil can potentially change Brazilian priorities, affecting the status of relations with the U.S., which could affect U.S. national interests as related to Brazil. This thesis will address how and whether the growing influence of Russian and Chinese diplomatic, informational, military and economic instruments of national power in Brazil pose consequences for U.S. national interests. The conclusion pointed out that Russia is creating tension points in Latin America, and China is promoting economic competition with the U.S. in the region, in both cases with consequences for U.S. interests in Brazil.

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