Final answer:
International negotiations are influenced by the global political environment and the strategic choices of the participants, considering factors like the UN, soft power, economic sanctions, and policies on globalization and trade.
Step-by-step explanation:
Two overall contexts that have an influence on international negotiations are the global political environment and the strategic choices made by those involved. The global political environment refers to the international power dynamics, including the roles of organizations like the United Nations (UN), and the use of various tools of influence such as soft power and nonmilitary methods like economic sanctions. On the other hand, strategic choices are the individual decisions by nations or leaders, which can be influenced by distinct domestic and foreign policies, such as highlighted in the two presidencies thesis. These contexts are affected by rules and reality at the time, and should be understood alongside public policy debates on globalization and trade, which occur not only at the global level through bodies like the World Trade Organization but also through regional trade agreements.