Putin takes the war to Zelensky’s spies: Did Russia just attack Ukraine's most sensitive targets?

Russia struck the headquarters of Ukraine's SBU in central Kyiv just a day after Vladimir Putin issued a major warning, hitting one of the country's most sensitive security targets. Volodymyr Zelensky said the Russian drone was aimed directly at SBU chief Oleksandr Poklad's office and ordered a “tangible” response that should mirror Moscow's attack where possible. The SBU has been behind some of Ukraine's most damaging operations deep inside Russia, including Operation Spiderweb and the Crimea Bridge bombing. With Zelensky now promising retaliation, has Putin opened a dangerous new round of spy-versus-spy strikes?