Ahead of the event, Ban will also visit Poland and Ukraine to take part in events commemorating of the end of the Second World War, Ukraine Today reports.

According to Ukraine’s Foreign Minister Pavlo Klimkin, the Moscow visit by a top UN official sends “completely the wrong message,” as Russia has violated "a number of key principles which are the cornerstone of the United Nations,” including the UN Charter.

See unian.info’s video section for more of the latest news from Ukraine in video from Ukraine Today, Ukraine’s 24-hour English-language news channel.