Exactly what promises do you think the US is breaking? The US has always been clear in its position on the occupied territories. It is not surprising that it has grown tired of the Israeli inaction (after 40 years) and especially the counter-productive actions. This does not mean that Israel is being abandoned or whatever you think.
Mexico: Death toll 27 after truck hits religious procession (AP)
from the article: Israel fears Obama heading for imposed Mideast settlement