Benjamin Netanyahu has used a speech traditionally used as a toast welcoming a new Israeli parliament to rail against Arab-Israeli members of the Knesset.
It comes just weeks after a deadlocked election result and as negotiations between various parties to form a new government continue.
Mr Netanyahu remains caretaker prime minister until a new coalition government can be established.
The swearing in of the new Israeli parliament, three weeks after the deadlocked election result, has been marred by taunts and heckling inside the Knesset building and a protest on the streets outside against the growing influence of Arab-Israeli politicians.
Benjamin Netanyahu, who remains caretaker prime minister while negotiations on forming a new government are underway, used a speech traditionally used to toast the incoming parliament to rail against the Arab-Israeli members of the Knesset.
He accused them of being supporters of the terrorist organisation Hamas, and wanting to destroy the State of Israel as well as topple his right-wing government.
"To those thinking of forming a government with such people, what do you think — their goals are just to improve the social rights of the Arab public?" Mr Netanyahu said.
"Do you not understand what they really want to achieve? What their national aspirations are?"
