What does M in James Bond stand for?

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Tags

1. #appearing
2. #twenty
3. #appeared
4. #fleming
5. #continuation
6. #seven
7. #known
8. #james
9. #superior
10. #character
11. #secret
12. #fictional
13. #films
14. #novels
15. #service
16. #authors
17. #series
18. #intelligence