1. Interview with European Commission official, DG Energy (2013) the interview took place in Brussels, at DG Energy.
2. Interview with Polish official (2013) the interview took place in Brussels.
3. Interview with representative of industry association (2014) the interview took place in Brussels, at Cafe Elvis.
4. Interview with senior Georgian official (2014) the interview took place in Brussels.
5. European Commission (2014a) Communication from the Commission to the European Parliament and the Council: European Energy Security Strategy, COM(2014) 330 final, available at:
http://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:52014DC0330&from=EN
, accessed 1 June 2014.