Russia is developing a top secret hypersonic missile designed to ‘break through any modern air defence system,’ according to a report. Tests will start next year on the weapon codenamed Ostrota, or Sharpness, the pro-Kremlin Izvestia reported overnight. The news comes a day after President Vladimir Putin threatened to ‘knock the teeth out of’ foreign enemies. The latest missile will be deployed with supersonic Tu-22M3 bombers and Su-34 fighter bombers… – Daily Mail Photo: Kremlin.ru