The European Union Monday called on Iran to address the international community's concerns regarding the nature of its nuclear program on the eve of a new round of negotiations.

"It remains in the hands of the Iranian regime to engage in meaningful negotiations and take the actions needed to reassure the international community that its program is entirely peaceful - including by implementing its applicable international obligations," said a press release issued by the office of the EU High Representative Catherine Ashton.

It noted that in her role as negotiator on behalf of the E3+3 (China, France, Germany, Russia, the United Kingdom and the United States) based on a mandate of the UNSC, Ashton has been actively engaged in diplomatic efforts to resume talks with Iran, most recently in Almaty, Kazakhstan, in February and April 2013.

While the European Unions objective remains to develop with Iran a constructive partnership, from which both sides could draw benefits, since 2005 the serious concerns over the Iranian nuclear programme have dominated EU-Iran relations," it added.