One of the prison guards told the Rebbe that when he beats a prisoner, he drinks his tea without its usual dose of sugar. Just watching the torture sweetened his tea... With a Jew, it's the other way around: knowing that a fellow's needs are unsatisfied somehow takes away the appetite for celebration, even if he personally may have reason to rejoice
Besides material support for the war effort, and in addition to tanks and fighter jets, Israel also needed spiritual support. There is a spiritual defense system, too, said the Rebbe