The decision to hold a referendum on acceding to the North Atlantic Treaty Organization (NATO) and the date of the vote will depend on Ukraine fulfilling conditions and criteria for joining the political-military alliance, Deputy Presidential Administration head Kostiantyn Yeliseyev has said.

"Certain conditions must be met in order to hold the referendum. Of course, the decision and notional timetable for conducting the plebiscite depend on Ukraine attaining all conditions. And the key condition is reaching a high-enough level of NATO standards," he said in Kyiv on Friday.

Yeliseyev said Ukrainian President Petro Poroshenko's recent interview for a German publication confirmed the already well-known position that Ukrainians themselves must vote in favor of accession.

"Poroshenko's words should be understood in this context with regards to holding a referendum on joining NATO," he said.

As earlier reported, Poroshenko several days ago in an interview published by the Berliner Morgenpost said he would be ready to hold a referendum on Ukraine's accession to NATO.