The global economy is currently experiencing geo-economic fragmentation, one of which is driven by the trade war between the United States (US) and China. This trade war has led to tariff increases that have significantly impacted strategic sectors, creating distortions in global supply chains. Indonesia's export dependence on the US and China makes its export performance particularly sensitive to tensions between these countries. To mitigate risks and capitalize on export opportunities arising from global geo-economic fragmentation, this study analyzes the costs and benefits of trade cooperation and strategies for diversifying Indonesia's export products and markets. The methods used include the Structural Match Index (SMI), Demand Index, Revealed Comparative Advantage (RCA), and the Global Trade Analysis Project (GTAP) model, based on version 9.0 data. The results indicate that the simulation of alternative cooperation with the Chinese trade bloc yields better export performance for Indonesia than the US bloc. A 95% tariff reduction simulation across all sectors shows a more significant increase in Indonesia's export value to allied blocs. The study also identifies non-traditional export destinations with high potential as alternative markets for Indonesia, such as Canada, Mexico, Brazil, Pakistan, and South Africa. Indonesia demonstrates comparative advantages in commodities like rubber, iron, steel, and minerals, though challenges remain in improving product competitiveness in international markets. Therefore, Indonesia must enhance its manufacturing capacity and strengthen trade relations with non-traditional countries, reducing dependence on traditional markets and seizing opportunities emerging from global trade shifts.

Keywords : International Trade, Export Diversification, GTAP