No one can guarantee safety of Kyiv if Russia attacks on Victory Day, says Moscow No one can guarantee the safety of Ukraine's capital Kyiv if Moscow attacks during World War Two victory celebrations, the deputy chairman of Russia's security council has said this morning. On Monday, Vladimir Putin declared a three-day ceasefire in May in the war with Ukraine to mark the 80th anniversary of the victory of the Soviet Union and its allies in World War Two. The Kremlin said the 72-hour ceasefire would run on 8 May, 9 May - when Putin will host international leaders including Chinese President Xi Jinping for celebrations to commemorate victory over Nazi Germany - and 10 May. In response, Ukrainian President Volodymyr Zelenskyy said he was ready, as long as the ceasefire was 30 days in length - something Putin has ruled out. Zelenskyy said Ukraine, given the continued war with Russia, could not guarantee the safety of any foreign dignitaries who came to Moscow for the traditional May 9 victory parade. In response, Dmitry Medvedev, a former Russian president who is outspoken in his anti-Western sentiment, called the statement a "verbal provocation" and said nobody had asked for Kyiv's security guarantees for the May 9 events. "(Zelenskyy) understands that in the event of a real provocation on Victory Day, nobody will be able to guarantee that Kyiv will live to see May 10," he wrote on Telegram.