A Russian man accused of trying to blow up two court buildings on behalf of Ukraine has been detained and charged with terrorism, Russia’s Federal Security Service (FSB) said Monday. The man, described as being in his mid-forties, was found “placing unknown objects in construction waste” near a railway station in the central city of Tambov, the law enforcement body said. The FSB said the objects were revealed to be “two homemade explosive devices,” which the man planned to detonate near two court buildings in the city. “He was detained by a security guard who arrived on the scene, and an opera…