(1)外交
１各国政府之间通过谈判等方式处理国际关系的方法和实践；２外交官履行的各种职能的总称。

(2)外交策略；外交政策

• risk management
• risk of buyer
• risk of employment
• risk of seller
• risk of war
• risk premium
• risks and causes of loss
• risks of navigation
• risk-utility test
• rivage
• rivagium
• rival unions
• riveare
• river authorities
• river boundary
• rivers in international law
• rivers in municipal law
• rixa
• rixatrix
• R.L.
• RL/C.
• road
• road brand
• road camp
• road districts