Why did Big Boss die?

Related questions

1. Are Solid Snake and Liquid Snake Brothers?
2. Who is Solidus Snake?
3. Is Ishmael Big Boss?
4. Is snake dead in Metal Gear Rising?
5. Will Metal Gear Solid continue?
6. Why is Solid Snake called snake?
7. Is Venom Snake the real big boss?
8. How tall is Solid Snake?
9. Does Solid Snake kill Venom Snake?
10. How old is Solid Snake?

Tags

1. #upraising
2. #retcons
3. #operation
4. #presumably
5. #intrude
6. #during
7. #double
8. #metal
9. #venom
10. #zanzibar
11. #solid