A Russian strategic bomber aircraft was likely brought down by the Ukrainian Air Force, according to an estimate by the British Defense Ministry, "the first instance of a strategic bomber being shot down by Ukrainian air-defense systems." The ministry said in an update on April 20 that it is "highly likely that Russia has now sustained at least 100 fixed-wing combat losses to date." The Russian Air Force lost one of its Tupolev Tu-22M3 supersonic heavy bombers on April 19. While the Russian Defense Ministry said there had been a crash likely caused by technical problems, Ukraine claimed it was shot down