Israel has not 'withered and died' - did you get this from a church authority? Someone who was attributed to having feed the multitude from a few loaves and fish decided to curse a tree?
Its a story...Interesting enough that so many stories 'hide' things within for 'those who have eyes to see' Magicians!
Naturally, if you are a Jew you won't agree with this. Neither will those who don't believe Jesus was the Messiah. But it is internally consistent with the text that if Jesus was the Messiah, then Israel as the fig tree would indeed have withered, no longer producing fruit.
Ironic. (and forgivable)