Ukraine has postponed the 18th Central European Summit, planned for May 11-12 in Yalta, Crimea, Foreign Affairs Ministry press secretary, Oleksandr Dikusarov, has announced at a news briefing.

In his words, this decision is due to heads of several European states will not be able to attend the Summit on these days.

"Ukraine finds it sensible to postpone the Summit," said Dikusarov.

He says, new terms of the Summit will be announced later.

As Ukrainian News earlier reported, the Ukrainian Foreign Affairs Ministry in late April said heads of 10 countries would take part in the Yalta Summit: Poland, Albania, Bulgaria, Lithuania, Macedonia, Romania, Slovakia, Croatia, Montenegro and Moldova.

Croatian President Ivo Josipovic on May 3 gave up on a trip to the Central European Summit in protest against violation of human rights in Ukraine.

German President Joachim Gauck, Albanian President Bamir Topi, Bulgarian President Rosen Plevneliev, Latvian President Andris Berzins, Bosnia and Herzegovina Presidency Chairman Bakir Izetbegovic, Montenegrin President Filip Vujanovic and Czech President Vaclav Klaus have rejected invitations to the Yalta Summit too.

Several heads of states referred to busy schedule, while others to violations of human rights in Ukraine.

European politicians are discontent over the situation with the case of Yulia Tymoshenko, a former prime minister and current leader of the Batkivschyna All-Ukrainian Association party, who is serving a jail term in Kachanivska women's penal colony No.54 in Kharkiv.

The 17th summit took place in Warsaw, Poland in May 2011.