Israeli Prime Minister Naftali Bennett has called on world powers to take a tougher line in talks aimed at halting Iran's nuclear program, while top Israeli defense and intelligence officials are turning to Washington for talks in Vienna. "I urge every country negotiating with Iran in Vienna to take a strong stand and make it clear to Iran that it cannot enrich uranium and negotiate at the same time," Bennett told a weekly cabinet meeting in Vienna. He added that Iran would have to pay the price for its violations.