[7] In 2010 - Ukrainian delegation member in negotiations with the European Commission regarding amendment of the Agreement between Ukraine and the EU on visa facilitation.

[11] 10 April 2013 - participant in the Verkhovna Rada session on Human Rights, National Minorities and International Relations.

[12] Olena was appointed Deputy Minister of Foreign Affairs of Ukraine on 20 August 2014,[13] as one of the most experienced professionals in the field of European integration.

She participated in all negotiations rounds on political and economic parts of the Association Agreement, representing the Ministry of Justice of Ukraine during the process.

[15] But a few hours later the text of the decree disappeared from the site of the president, according to Ukrayinska Pravda Zerkal did agree to be the only authorized representative of the international courts of Ukraine concerning Russia, but not to be a deputy head of the administration.