Israel has a policy that if they look like being wiped out by any aggressor, that they will respond with their own special 'Final Solution'.
From Wiki.:
"The Samson Option is the name that some military analysts have given to Israel's hypothetical deterrence strategy of massive retaliation with nuclear weapons as a "last resort" against nations whose military attacks threaten its existence.[1][2]
...The name is a reference to biblical character Samson who pushed apart the pillars of a Philistine temple, bringing down the roof and killing himself and thousands of Philistines who had captured him,[5] crying out "God 'Let me die with the Philistines!'" (Judges 16:30).[6]"
