The linkages between trade and the environment are inescapable. However, trade liberalization and environmental protection appear to be in a tension. It is necessary to narrow the divide between trade and environmental policy goals and practices. For this purpose, the foundation of environmental policy should be strengthened and trade theory should be refined. The linkages between trade and the environment are inescapable. However, trade liberalization and environmental protection appear to be in a tension. It is necessary to narrow the divide between trade and environmental policy goals and practices. For this purpose, the foundation of environmental policy should be strengthened and trade theory should be refined.