He managed to make the use of drones to kill people be accepted by the general American public. It's now standard practice to take out targets with drones.

https://www.nytimes.com/roomfordebate/2016/01/12/reflecting-...

I am so sorry to see you downvoted. But that is the exact sentiment as well. The number of people killed by drones in just the last decade has not even been counted because the official government policy to mark all 18+ males as targets.

You forgot one thing... https://en.wikipedia.org/wiki/2009_Nobel_Peace_Prize

The Art of Eloquent Hypocrisy by Barack Obama

The U.S. didn't bomb indiscriminately, or to expand borders, or use false pretenses to try to justify it, or in contravention to international law. Putin has done all of those things. And not just right now but in 2014 when Obama was president. I think history will take a dim view of Obama's, and the world's, decision to just let Crimea go as if sometimes a war of aggression to expand borders is not a crime at all, let alone "the supreme international crime".

The difference is that not all bombings are the same. There's good bombings and bad bombings.