What’s the Big Deal About Drones?

For all the discussion about the legality and morality (under US or International law) of the US military’s (and spy agencies) use of drones, how is it really different from the way the US military (and all militaries) has used lethal force basically forever? That is not to say it’s fine. That’s an entirely different question. How is it different? We’re discussing that question right now at TPMPrime.