Three of Vladimir Putin’s top hypersonic scientists have been detained on suspicion of high treason – after Ukraine claimed to have shot down a volley of ‘undefeatable’ missiles. Kremlin spokesman Dmitry Peskov said the eminent academics, Anatoly Maslov, Alexander Shiplyuk and Valery Zvegintsev, all face ‘very serious accusations’. The trio have all worked on the weapons for years and were among the authors of a book chapter entitled ‘Hypersonic Short-Duration Facilities for Aerodynamic Research at ITAM, Russia’. Putin has long boasted that Russia is the global leader in hypersonic missiles and unveiled his ‘Kinzhal’ rockets in 2018, hailing them as...