Now with Mubarak out of the power in Egypt this will put Israel in a hard situation, but i think we continue being possible to strike Iran, because the Sunni people won't be very happy with a chii country as Iran with nuclear weapons. But think about this, what will make Egypt if Israel strike Iran? the answer is NOTHING, they can be against this strike but they don't have power in the decision of Israel, I think that the Egypt revolution can't be taken as an argument to not make the strike. Obviusly now that Mubarak is gone will make things harder, but Israel can with this situation, and more now that the army in Egypt said that they will repect the peace with Israel.
Law expanding definition of terrorist activity passes first Knesset reading (Haaretz)
from the article: Mubarak's departure thwarted Israeli strike on Iran