What is the duration of the SOFA agreement?

The duration of the Okinawa Status of Forces Agreement (SOFA) is characterized by its continuity until it is either modified or terminated. This means that the agreement does not have a predefined end date and remains effective indefinitely unless an official alteration occurs. This aspect of the agreement provides a framework for maintaining U.S. military presence and operations in Japan, specifically Okinawa, without the need for regular renewal or reassessment based on fixed timelines.

While other choices suggest limitations or conditions that don't apply to the SOFA, they do not accurately represent the nature of its duration. For instance, the idea that it lasts for a specific period with an option for renewal, or that it has a fixed expiration date, does not align with how the agreement is structured. Similarly, suggesting its duration is dependent on the presence of U.S. forces overlooks the agreement's intrinsic nature of remaining in effect until a formal change is enacted. Therefore, the correct understanding of the SOFA is that its validity is sustained continuously until it is changed or revoked.