U.S.-Japan relations are characterized by a strong partnership that has evolved since the end of World War II. The two countries signed the U.S.-Japan Security Treaty in 1960, which allows the United States to maintain military bases in Japan, ensuring mutual defense and regional stability. This alliance has fostered economic cooperation and cultural exchange. Economically, the United States and Japan are major trading partners, with significant investments in each other's markets. Both nations collaborate on various global issues, including climate change, trade, and security. Their relationship remains vital for peace and prosperity in the Asia-Pacific region.