Blasts at Russian base in Crimea show possible Ukrainian fightback
Reuters: "Russia on Tuesday blamed saboteurs for orchestrating a series of explosions at an ammunition depot in Russian-annexed Crimea, a rare admission that armed groups loyal to Ukraine are damaging military logistics and supply lines on territory it controls. The incident follows a series of explosions last week at a Russian-operated air base in Crimea which Ukrainian officials hinted were part of some kind of special operation but which Moscow said at the time was an accident."
"Two senior Ukrainian officials took to Twitter to exult in the explosions, however, with one, presidential advisor Mykhailo Podolyak, hinting at possible Ukrainian involvement while stopping short of confirming such a role."