In Egypt a few years ago, the Muslim Brotherhood was making promises. The protesters in Cairo say the group isn't keeping them.
By refusing to support the Palestinian bid at the UN, President Obama has essentially endorsed a No State Solution between Israel and Palestine. Changing course is possible. A good place to start would be threatening to remove US aid to Israel, given its plans for more settlement building.
Demonstrators against a proposed Egyptian constitution in Cairo have devolved into confrontations between pro- and anti-Muslim Brotherhood protesters.