Joe Klein really said this. On MSNBC's Morning Joe on October 23. From a recent piece by Vijay Prashad:
'On Oct. 23, Time’s Joe Klein was on MSNBC’s Morning Joe. Host Joe Scarborough spoke passionately against the use of drones, saying “it seems so antiseptic and yet you have 4-year-old girls being blown to bits because we have a policy that now says, ‘You know what? Instead of trying to go in and take the risk and get the terrorists out of hiding in a Karachi suburb, we’re just going to blow up everyone around them.’”
Klein, a defender of the Obama record, answered emotionlessly, “The bottom line in the end is — whose 4-year-old gets killed? What we’re doing is limiting the possibility that 4-year-olds here will get killed by indiscriminate acts of terror.” (emphasis added)'
Meanwhile, 178 children have died in US drone strikes on the Pakistan-Afghanistan borderlands.