From the article:
"The state of Israel will fully back those who acted on its behalf," Olmert said. "The soldiers and commanders who were sent on missions in Gaza must know that they are safe from various tribunals."
The most important case in the history of the Supreme Court Of Israel was the Adolf Eichmann case. A core argument in this case was that Eichmann was obeying the orders of the Army and the State and thus not accountable. The rebuff to this, and cited by the Supreme Court of Israel in their judgement, was the International Nuremberg Principles, specifically Principle IV. "The fact that a person acted pursuant to order of his Government or of a superior does not relieve him from responsibility under international law, provided a moral choice was in fact possible to him."
But principles are temporal conveniences to the State Of Israel.
A few short years ago when Israeli Refusniks argued that they would not serve in the Occupied Territories because occupation was against International Law the Supreme Court of Israel ruled thusly:
Supreme Court Judge Dorit Beinisch declared that Israel's "fight against terrorism" outweighed the reservists' moral beliefs. "The considerations of state security and the integrity of Israeli society must be considered against the arguments of conscience and belief," she wrote in the verdict."