because "security" is their smokescreen for land greed. When all the Land of Israel is Arabenrein, there will be "threats" from outside. When the neighboring states are nuked to oblivion, there will be some new imaginary threat to make them feel insiecure and make new enemeis in the world.
Fear of rioting, disorder at Temple Mount prompt restrictions on Muslim worshiper (Haaretz)
from the article: Thanksgiving, Tikkun Olam, and U.S. Jews breaking the Israel barrier