VIENNA (AP) — High-ranking diplomats from China, Germany, France, Russia and Britain made progress at talks Saturday focused on bringing the United States back into their landmark nuclear deal with Iran, but said they need more work and time to bring about a future agreement.

After the meeting, Russia's top representative, Mikhail Ulyanov, tweeted that members of the Joint Comprehensive Plan of Action, or JCPOA, "noted today the indisputable progress made at the Vienna talks on restoration of the nuclear deal."

"The Joint Commission will reconvene at the end of the next week," Ulyanov wrote. "...