1. The European Union (2017) EU Sanctions Against Russia Over Ukraine Crisis, 16 March. Available at «http://europa.eu/newsroom/highlights/special-coverage/eu_sanctions/index_en.htm#5» Accessed 2 April 2018.
2. The European Union and the United States (2016) Joint Statement: US-Eu Energy Council. Available at «https://eeas.europa.eu/headquarters/headquarters-homepage_en/2817/Joint%20Statement:%20U.S.-EU%20Energy%20Council» Accessed 1 June 2019, p. 1.
3. Transatlantic challenges: ukraine, ttip and the struggle to be strategic;Hamilton;J. Common Mark. Stud.,2014
4. Dreyer, I. and Popescu, N. (2014) ‘Do Sanctions Against Russia Work?’ Brief 35, Institute for Security Studies. Available at «https://www.files.ethz.ch/isn/186485/Brief_35_Russia_sanctions.pdf» Accessed 25 February 2016.
5. ‘The European Union as an inadvertent great power: EU actorness and the Ukraine crisis;Gehring;J. Common Mark. Stud.,2017