My comment will surprise no one but I feel really unconfortable with the more and more popular idea that "we" do not have to apply GC or any kind of law if the other side doesn't.
Unfortunately, this has more influence that people think. Such approach are not limited to US/EU but find their worst transcription in reallity in the forgotten wars as DRC, Sudan, Colombia...

Obligating ourselves to play by the rules and develop complexe but adaptive solutions are the solution. Not changing the GC or the Law of War.

Never forget that people are watching you. If the best soldiers of the world can kill indiscriminately and their government do what ever they want and impose "dictatorial" laws, then why would or should dictators respect the law and the people?