Keep in mind that China wasn't a threat to either the US or the Soviet Union, even after we had fought a nuclear war. That didn't stop us from recognizing the long term threat that China posed (by virtue of sheer numbers) were we both to be weakened.
Your still thinking immediately. The Israeli's are thinking of survival. In the immediate aftermath of a nuclear war Israel would still be able to handle any of its neighbors. However economically, demographically, and ultimately (after a couple of years have passed) militarily they would be fatally weakened. That is why Israel would have to at least seriously consider lashing out at everyone around them.As for Israel losing 1.5 million poeple, it depends. Unless the losses are restricted to military assets, even with that much of a population reduction if its conventional capability is still intact the Arabs would have a hard time invading. Remember, this would be a defensive war for Israel not an aggressive one which would require large conscripts. Hardware and quality of millitary would deny penetration of Arabs into Israel from a distance, and that does not require equal numbers of the Israelis manpower to the enemy's. Israel has fought wars at odds of 10 to 1 and prevailed. Therefore i think unless the Arabs have an answer to Israel's conventional capability, i don't think would dare.
I am saying that even if Israel were to win a nuclear war, they would be devastated. In all of their previous wars to lose meant complete ruin, but winning did not. In a nuclear war even winning calls their long term survival into question, and kills a significant proportion of them (25% casualties among a people who are already outnumbered by their neighbors is nothing to take lightly).Im not sure i understand what you mean there but i will have a try. If you mean those wars were not potentially devastating for Israel, i will beg to differ. If Israel had lost those wars the, Jewish state as we know it would have vanished from the maps. Surely all was at stake there. In the words of one of the pilots in one of the wars he said 'We(Isreal) when we fight, we have one advantage: we have no alternative'.