Shimon Peres said he appreciated France's firm stance in negotiations earlier this month on Iran's nuclear programme, adding that there should be "no let-up" in the international pressure on Tehran.
"We are convinced that if Iran manufactures its bomb, all the countries of the Middle East will want to follow suit," the Israeli president told French weekly Le Journal du Dimanche.
Peres will meet Francois Hollande today when the French president begins a three-day visit to Israel amid renewed efforts by the West to curb Iran's contested nuclear programme.
Israel and world powers suspect the Islamic republic's programme of uranium enrichment to be a covert drive to acquire a nuclear weapons capability, an allegation vehemently denied by Tehran.
France took a tougher line than its Western partners in Geneva talks earlier this month aimed at resolving the impasse.
Iranian hardliners blamed France for scuppering a deal that would have given the West guarantees Tehran was not acquiring atomic weapons in exchange for an easing of crippling economic sanctions against the Islamic republic.
The P5+1 negotiating with Tehran is made up of the five permanent members of the UN Security Council -- Britain, China, France, Russia and the United States -- plus Germany.
The talks are due to resume in Geneva in the coming week.
