Russian President Vladimir Putin oversaw military exercises off the coast of Crimea on Thursday that included the launching of a hypersonic missile system.
원문출처 : https://www.cnn.com/2020/01/09/europe/russia-putin-hypersonic-missile-test-intl/index.html
원문출처 : https://www.cnn.com/2020/01/09/europe/russia-putin-hypersonic-missile-test-intl/index.html