UNCTAD and the WTO are the two main multilateral organizations dealing with international trade, but they differ in their origins, mandates, functioning, and views on trade and development. UNCTAD was established by the UN in 1964 to integrate discussions of trade, investment, and development issues, with a focus on addressing the needs of developing countries. The WTO was established in 1995 and operates outside of the UN system, with a narrower mandate focused on negotiating and enforcing binding trade rules through a rules and dispute-based approach. Whereas the WTO sees trade liberalization as leading to development, UNCTAD views the relationship between trade and development as more complex and multidimensional.