On June 5, Israel launched a preemptive strike on the Egyptian air force, then proceeded to lightning victories on three fronts. The Six-Day War is legend, but less remembered is that, four days earlier, the nationalist opposition (Menachem Begin’s Likud precursor) was for the first time ever brought into the government, creating an emergency national-unity coalition.
Everyone understood why. You do not undertake a supremely risky preemptive war without the full participation of a broad coalition representing a national consensus.
^