Why did the war in Ukraine start?

Related questions

1. Is Donetsk in Russia or Ukraine?
2. Is Ukraine now part of Russia?
3. Who is fighting Ukraine?
4. Why did holodomor happen?
5. Is visa required for Ukraine?
6. Is Russia still occupying Crimea?
7. How old is Ukraine?
8. Is Donetsk communist?
9. What is the population of Kiev 2018?
10. Was Ukraine ever a country?

Tags

1. #sparked
2. #decision
3. #proponents
4. #prolonged
5. #november
6. #european
7. #union
8. #yanukovych
9. #president
10. #preparations
11. #viktor
12. #ukrainian
13. #ukraine
14. #crisis
15. #began
16. #association
17. #implementation
18. #protests
19. #agreement
20. #suspended