If Israel starts a war with Iran, Hezbollah, Syria, and Hamas, it will trigger a regional war that will bring in outside powers. These outside powers won't stop just because Tel Aviv is leveled by rockets. They will fight on. Israel won't have any say in the matter anymore. Outside powers will control the tempo and length of the war based upon THEIR needs, not Israel's. Israel will become the sacrificial pawn in an endgame played by larger powers, as huge numbers of more and more deadly weapons are funneled into the conflict. Israel will be "collateral damage". Israel cannot afford to become the lowly pawn in a war between larger forces.
In three days, Greek coastguard rescues 2,500 migrants (Reuters)