When Corbyn was leader of the Labour Party he was stabbed in the back by members of his own party because of his sympathetic views regarding Palestine.
The Labour members who stabbed him in the back held zionist views and would rather have a Tory government than a Labour government under Corbyn.
Meanwhile,Starmer has purged the Labour party of members who held similar views to Corbn including banning a long time member of the party,an 80 year old Jewish lady because of her anti-zionist views.