What exactly do you think Obama can or will do...he can't even unite his own country. Any action he would think to take "against" Israel would be 100% partisan. He won re-election by 1% of the population and we who support Israel still hold a large majority in the House of Representatives which is the only house of Congress that means anything as it directly represents the people of each state.
Colombia recalls ambassador to Venezuela amid border crisis (Reuters)
from the article: Hamas military chief Ahmed Jabari killed by Israeli strike