GENEVA (AP) — There's no deal yet but both sides claim progress was made in talks between Iran and six world powers over Tehran's nuclear program.

Iran characterizes the talks as "serious" but insists the nation cannot be pushed to give up uranium enrichment. U.S. Secretary of State John Kerry says "significant progress" has been made.

The talks in Geneva have ended for now after France objected that proposed measures didn't go far enough, but discussions are scheduled to resume November 20. Negotiations are moving into tougher ground over ways to ease Western concerns that Iran could one day develop atomic weapons.

Iran denies that claim and says its intentions are peaceful.

Israeli Prime Minister Benjamin Netanyahu has criticized what he considers readiness by the six powers to be too generous and get too little in return.