https://www.pravda.com.ua/articles/2018/06/23/7184222/
https://ukrainian.voanews.com/a/novi-dani-povjazujut/4451597.html
A former lawmaker, Curt Weldon, and a Ukrainian-American billionaire, Alexander Rovt, played key roles in framing the Ukrainian peace proposal at a conference in early 2016. Some believe this indicates greater involvement by Moscow.
https://www.fresnobee.com/news/nation-world/national/article213655989.html
https://www.radiosvoboda.org/a/29311930.html
https://www.radiosvoboda.org/a/29313568.html
https://ru.krymr.com/a/29307174.html
http://www.mk.ru/politics/2018/06/20/nazvany-klyuchevye-ugrozy-ot-krymskogo-mosta-dlya-ukrainy.html
https://ru.krymr.com/a/29305796.html
https://www.radiosvoboda.org/a/29307019.html