 The Ukrainian army destroyed four Russian S-300 and S-400 launchers in one week. The Russian army has lost at least four long-range surface-to-air missile launchers like S-300 and S-400 as a result of successful strikes by the Ukrainian armed forces over the past week. The UK Defence Ministry said this in an intelligent update posted on the ex-social media platform. Russia has likely lost at least four long-range surface-to-air missile launchers to Ukrainian strikes over the last week, the Defence Ministry said. It added that on October 26, Russian media reported that three Russian SA-21 launchers had been destroyed in the Luhansk region and Ukrainian sources reported additional Russian air defence losses in Crimea. Russia has long prioritised ample, high-tech, long-range surface-to-air missile systems as a key component of its military strategy. The recent losses highlighted that Russia's integrated air defence system continues to struggle against modern precision strike weapons and will highly likely increase the already significant strain on remaining systems and operators, the agency added. The ministry believes that there is a realistic possibility that as Russia replaces the destroyed systems in Ukraine, it will weaken its air defences in other operational areas.