Kyiv, June 2 -- Ukraine launched a "large-scale" drone attack deep into Russian territory that security officials claim destroyed 40 military bombers, even as Kyiv gears up for another round of talks in Istanbul to explore prospects of a ceasefire.
Ukrainian security sources told CBS News that the attack - called "Operation Spider's Web" - took over a year and a half to execute and was personally supervised by Ukrainian President Volodymyr Zelenskyy.
In his evening address, Zelenskyy said that 117 drones had been used in the operation. He claimed the operation had been headquartered out of an office next to the local FSB headquarters. The FSB is the Russian intelligence and security service.
Security Service of Ukraine smuggled drones in...