Yes, YESHUA will deal very severely with Israels sins, but only he can do it, he does not look kindly on those who try tp do it themselves.
Yes, the Lord will judge Israel, and it is presumptious for any Christian to think that they would be part of that.
I think we should try to help as best we can, but frankly, the best “help” Israel could receive from countries like the USA is to not constantly undermine and sabotage them as they try to fight against their enemies.