Here are the sources I used
- http://abcnews.go.com/International/refresher-happening-ukraine-russia/story?id=24605042
- http://www.usatoday.com/topic/9396eeb0-e226-4d2f-9974-fd73bf5f7718/ukraine-crisis/
- http://www.bbc.com/news/world-europe-28969784
- http://uk.reuters.com/article/2015/01/10/uk-ukraine-crisis-russia-debt-idUKKBN0KJ06J20150110?feed&feedName=topNews
- http://www.summer.harvard.edu/blog-news-events/conflict-ukraine-historical-perspective
- http://en.wikipedia.org/wiki/Ukraine%E2%80%93European_Union_Association_Agreement