The country's policy changes in international affairs are jointly affected by a variety of factors, including the following aspects： 1. **National interest**： -**Security interests**: The country's territorial security and stable sovereignty are the most core interests, which directly affect the formulation of its foreign policy. -**Economic interests**: Economic needs such as trade, investment, and resource acquisition often prompt countries to adjust their foreign policies to protect or expand their economic interests. 2. **International environment**： -**Changes in the international landscape**: Such as the adjustment of the relations of major powers and the enhancement or weakening of the role of international organizations, will affect the country's policy choices. -**Regional situation**: Turmoil in neighboring countries or the emergence of cooperation opportunities may lead to policy changes. 3. **Domestic politics**： -**Change of government**: The new government may adjust its foreign policy according to its political philosophy. -**Public opinion**: People's opinions and pressure may force the government to change its policies to meet domestic needs. 4. **Economic and technological development**： -**Economic situation**: Economic growth or recession will affect the country's foreign aid, trade policies, etc. -**Technological progress**: Technological progress may change the country's strategic priorities, such as cyberspace security and the development of artificial intelligence. 5. **Culture and ideology**： -**Values**: A country's cultural traditions and ideology may affect its relations and policy orientations with other countries. -**Soft power**: Through cultural output and the dissemination of values, the country may adjust its policies to enhance its international influence. 6. **International law and norms**： -**International obligations**: Countries are required to comply with signed international treaties and agreements, which may lead to policy adjustments. -**Global governance**: Global issues such as climate change and terrorism require international cooperation to influence national policies. 7. **Emergencies**： -**Crisis events**: Emergencies such as terrorist attacks, natural disasters, etc. may force the country to adjust its policies quickly. -**Diplomatic conflicts**: Escalation of tensions with other countries may lead to policy changes. In summary, the country's policy changes in international affairs are the result of the complex interaction of internal and external factors, and they need to be flexibly responded to according to specific circumstances.