There is a small kernel of change. The Bush Administration would have shrugged off the deaths of the Palestinian children in Gaza and when asked if enough had died, have said, "maybe, maybe not." At the least the Obama Administration said, "We note in particular that Israel has the democratic institutions to investigate and prosecute abuses, and we encourage it to use those institutions." The Bush never in anyone's wildest dreams have encouraged Israel to investigate and prosecute anything or anybody. It is also still encouraging to note that Mitchell and Obama haven't caved in to Netanyahu's rejection of peace, nor have they acquiesced to a Napoleonic peace.
U.S. to defend Syrian rebels with airpower, including from Assad (Reuters)
from the article: U.S. calls UN report on Gaza war unfair to Israel