Ukraine must be allowed to join Nato, President Volodymyr Zelenskiy told the Telegraph on Friday as he warned that Russia’s military build-up on his country’s borders “threatens the entire democratic order”. Mr Zelenskiy reiterated his country's longstanding call for Nato membership in an exclusive interview with the Telegraph hours before travelling to Paris for talks with Emmanuel Macron and Angela Merkel. He backed Joe Biden’s call for a bilateral summit with Vladimir Putin to defuse the crisis, warning that it was a test of “Europe and the West as a whole”. “It is only Ukraine's accession to Nato that can guarantee security and peace in the long run,” he said. “This is a conflict which will decide whether the true democratic order will be preserved, whether the principle of the inviolability of borders will work, and whether there will be freedom of nations in choosing their own destiny.” The intervention comes amid growing international concern at Russian troop concentrations near the Ukrainian border. According to Mr Zelenskiy, there are now at least 40,000 Russian troops deployed in Crimea and another 40,000 in regions of Russia bordering Ukraine.