The FTC isn't the only one that can intervene:.
Qualcomm (US based) and NXP (Dutch based) blocked by China: https://www.reuters.com/article/technology/qualcomm-ends-44-...
Microsoft (US based) and Activision Blizzard (US Based) blocked by UK: https://techcrunch.com/2023/08/22/microsoft-activision-uk-cm...
These are far from the only examples but they come to mind immediately.