Russia's air force has lost 90 planes since the start of the war in Ukraine and is becoming less formidable by overworking its jets, UK intelligence said. The British Ministry of Defence said in its latest daily intelligence update on Thursday that Russia is quickly depleting its fleet of warplanes through overuse because the conflict is dragging on for much longer than anticipated. "All aircraft have a projected lifespan, in flying hours," the update said, adding that it's highly likely that with the extra use, Russia is "eating into many of its airframes' lifespans" far more quickly than planned for....