This is so important for the Middle East. Israel (a made-up by the West country) needs to at least go back to its Post WW2 days borders and let Palestinians have their territory. US has been protecting Israel at the UN security for decades and decades and now finally under Obama they didn't. This is so huge.
He won't be able to actually do anything about it. This is permanent, and even if he tried to undo it with another resolution he'd just be vetoed by some other country like France or China.