European leaders suspect the senators were pursuing U.S. economic interests at Europe's expense.
https://www.bloomberg.com/view/articles/2017-06-16/u-s-russia-sanctions-punish-europe-too
Kanzlerin und Außenminister vereint gegen Washington: Merkel und Gabriel warnen vor neuen Russland-Sanktionen, die der US-Senat beschlossen hat. Auf dem Spiel stehen die deutschen Energie-Interessen.
Steven Pifer, director of the Arms Control and Non-Proliferation Initiative and a senior fellow with the Center for 21st Century Security and Intelligence, discusses new legislation that applies additional sanctions on Russia and the implications for U.S.-Russia economic relations.
https://www.brookings.edu/podcast-episode/on-the-senate-passing-new-russia-sanctions/
https://www.ft.com/content/6fbafa0c-528e-11e7-bfb8-997009366969
https://politeka.net/449028-nikolay-sungurovskiy-seychas-uzhe-pozdno-zakanchivat-ato/
https://www.inopressa.ru/article/16Jun2017/tagesspiegel/gabr2.html
http://news.liga.net/articles/politics/14770441-sanktsii_navsegda.htm
https://ru.krymr.com/a/28558611.html
http://www.kommersant.ru/doc/3326253