After three days of high-stakes negotiations over Iran’s nuclear program concluded in Geneva on Sunday with no deal reached but plans for further talks, experts say they are still hopeful that a diplomatic solution can avert war.

“The talks haven’t failed,” said Robert Naiman, policy director for Just Foreign Policy, in an interview with Common Dreams. “There is another round next week. The talks just haven’t been completed yet.”

While the content of the negotiations has largely remained secret, a U.S. official told journalists that the proposal considered in Geneva called for Iran to temporarily halt aspects of its alleged nuclear program in exchange for a slight easing of sanctions—measures allegedly aimed at buying time for further talks.

There is no evidence proving Iran has a nuclear weapons program, which many say does not exist.

France, which possesses a large stash of nuclear weapons, ultimately rejected the proposal on the grounds it did not do enough to stop Iran’s uranium enrichment or plutonium production.

While the talks did not end in an agreement, the P5+1 group of Britain, China, France, Russia, the United States, and Germany agreed to resume negotiations with Iran on November 20.