If Israel decided they were going to commit utter genocide on a people and use their powers, not for peace but conquest, I would hope you would stand against that.
I would stand against their leadership’s decision but not their right to exist.
I don’t think it is inconsistent to stand against wicked Ahab and Jezebel or Manasseh as he sacrifices to Moloch while still supporting Israel as God’s chosen. I stand against evil wherever it exists.