Israel\'s foreign ministry has proposed in a policy paper \"toppling\" Palestinian president Mahmud Abbas if a Palestinian bid for state observer status at the United Nations is approved later this month. \"Toppling Abu Mazen\'s (Abbas\'s) regime would be the only option in this case,\" the position paper obtained by AFP says. \"Any other option... would mean waving a white flag and admitting the failure of the Israeli leadership to deal with the challenge.\"