Could a European war let Yonai send Hideki Tojo to command Japanese forces in North Africa and remove him from domestic politics?
Short answerPossibly; Yonai could present the post as a vital command for an experienced general while gaining distance from a political rival.
NotesA North African command would be a plausible political manoeuvre within the scenario. A Japanese contingent fighting beside Britain would need a commander whose experience and status protected the emperor from embarrassment before an important ally. Yonai could therefore describe North Africa as an honourable opportunity for Tojo to win a great victory. The same appointment would move Tojo away from Tokyo while Yonai tried to consolidate a more moderate government.