6. Proportionality. A state must, prior to initiating a war, weigh the
universal goods expected to result from it, such as securing the just cause, against the
universal evils expected to result, notably casualties. Only if the benefits are proportional to, or “worth”, the costs may the war action proceed. (The universal must be stressed, since often in war states only tally
their own expected benefits and costs, radically discounting those accruing to the enemy and to any innocent third parties.)
"Jus in bello refers to justice in war, to right conduct in the midst of battle. Responsibility for state adherence to
jus in bello norms falls primarily on the shoulders of those military commanders, officers and soldiers who formulate and execute the war policy of a particular state. They are to be held responsible for any breach of the principles which follow below. Such accountability may involve being put on trial for war crimes, whether by one's own national military justice system or perhaps by the newly-formed International Criminal Court (created by the 1998 Treaty of Rome).
We need to distinguish between external and internal
jus in bello. External, or traditional,
jus in bello concerns the rules a state should observe regarding the enemy and its armed forces. Internal
jus in bello concerns the rules a state must follow in connection with its own people as it fights war against an external enemy.
There are several rules of external
jus in bello:
3. Proportionality. Soldiers may only use force proportional to the end they seek. They must restrain their force to that amount appropriate to achieving their aim or target. Weapons of mass destruction, for example, are usually seen as being out of proportion to legitimate military ends."
6. No reprisals. A reprisal is when country A violates
jus in bello in war with country B. Country B then retaliates with its own violation of
jus in bello, seeking to chasten A into obeying the rules. There are strong moral and evidentiary reasons to believe that reprisals don't work, and they instead serve to escalate death and make the destruction of war increasingly indiscriminate. Winning well is the best revenge.
from the
The issue with Israel is that they consistently use excessive military force, defying the just war principle of proportionality. This is wrong, regardless of how many palestinians blow themselves up on buses or how many scattered amateurs fire rockets with blow up some fields and occasionally kill or hurt an Israeli, Israel is NEVER justified in its outrageous military responses.