Why did littlefinger kill Jon Arryn?

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Tags

1. #littlefinger
2. #belonged
3. #giving
4. #baelish
5. #assassination
6. #tyrion
7. #catspaw
8. #valyrian
9. #arryn
10. #catelyn
11. #which
12. #conspired
13. #assassin
14. #poison
15. #dagger
16. #steel
17. #attempted
18. #murder