https://ru.krymr.com/a/29032058.html
http://tyzhden.ua/History/209172
Both sides ignore the ceasefire.
https://www.vox.com/2018/2/8/16992194/ukraine-russia-conflict-putin-eu
https://www.inopressa.ru/article/08Feb2018/wsj/exxon.html
https://republic.ru/posts/89368
https://www.rbc.ru/newspaper/2018/02/08/5a7b1d7b9a7947c5913f9d6b