Certainly in the short term it makes sense for Israeli politicians to vote the wishes of the people who will have the votes to reelect them or to put them out of office. However one problem many Israelis ignore is that ultimately Israel makes it or doesn't make because of the support of Jews in the diaspora; if the EU and USA turn against Israel, the odds against it increase dramatically. It would be wise to remember that before making decisions that would antagonize them.
Suicide attacks kill at least 12 Iraqi troops near Ramadi (AP)
from the article: Fair-weather friend: Israel's selfish attitude toward Diaspora Jewry