So before joining the army you first see if you agree whith the goverment in place. Logically the same with taxes, traffic regulations , ad infinitum. You live in a strange world. The army is a duty independent of political views. Anything else is collective suicide. There are rules for conciencious objectors. The IDF is a fixed menu, not "à la carte".
U.S. warns governments, bankers Iran sanctions still in place (Reuters)
from the article: IDF preparing to evacuate protesting settlers from West Bank market