Paul is pretty clear on who is Israel:
(Rom 9:6 KJV) Not as though the word of God hath taken none effect. For they are not all Israel, which are of Israel:
(Rom 9:7 KJV) Neither, because they are the seed of Abraham, are they all children: but, In Isaac shall thy seed be called.
(Rom 9:8 KJV) That is, They which are the children of the flesh, these are not the children of God: but the children of the promise are counted for the seed.
Some just don't like the conclusions
(Rom 9:6 KJV) Not as though the word of God hath taken none effect. For they are not all Israel, which are of Israel:
(Rom 9:7 KJV) Neither, because they are the seed of Abraham, are they all children: but, In Isaac shall thy seed be called.
(Rom 9:8 KJV) That is, They which are the children of the flesh, these are not the children of God: but the children of the promise are counted for the seed.
Some just don't like the conclusions