Benjamin Netanyahu has reiterated his belief that Iran intends to destroy Israel using nuclear weapons.
The Israeli Prime Minister, speaking the day before an international meeting , focused on Tehran's nuclear ambitions, takes place in Baghdad, called for steps to be taken to ensure Iran does not get an atomic bomb.
Mr Netanyahu called for the international officials, who represent the US. Britain, China, Russia, France and Germany, "to make clear and unequivocal demands that Iran stop all of its nuclear enrichment activity, remove from Iran all the material that has been enriched until now and dismantle the underground nuclear facility near the city Qom".
He told civil servants: "Iran wants to destroy Israel and it is developing nuclear weapons to fulfil that goal. Against this malicious intention, leading world powers need to display determination and not weakness.
"They should not make any concessions to Iran."
After the last meeting of the group in April Mr Netanyahu complained that the Ahmadinejad regime had been given a "free pass" after talks were disbanded, allowing Iran to enrich uranium without obstacle for five more weeks.