What is Justice League war based on?

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Tags

1. #geoff
2. #superhero
3. #justice
4. #johns
5. #animated
6. #direct
7. #comics
8. #adaptation
9. #relaunch
10. #featuring
11. #league
12. #material
13. #challenged
14. #story
15. #removed
16. #universe
17. #video
18. #first
19. #unsourced
20. #origin