When a tactical change is suggested in a project, especially from an international project that interfaces with the current project, it’s important for the project manager to maintain focus on the priority items while the change goes through the change control process1. This involves assessing the impact of the change, considering the potential risks and benefits, and deciding whether to approve or reject the change2. The change control process ensures that all changes are handled in a controlled and organized manner, minimizing the potential for disruption and ensuring that the project remains aligned with its objectives3. References: 

https://www.tacticalprojectmanager.com/managing-international-projects/

https://www.goskills.com/Project-Management/Resources/Project-changes