Shouldn't something this important be implemented at a higher level?
I'd think there ought to be a new Geneva convention about the rules of robot warfare. Get all the countries capable of making deadly robots to agree on what kinds of tactics are okay and the chain of command/responsibility issue addressed by this memo.
Of course there's no guarantee that all countries will sign it, or that those that do will keep to their promises, or that it will regulate terrorists.
I do approve of the move; it's definitely a step in the right direction. It's better than having no rules on the issue, or rules saying that software should have the power to make those decisions.
But the government should be taking a stronger stance on the issue.