Chinese FM quits Iran talks, team stays behind

Chinese Foreign Minister Wang Yi left talks in Switzerland to seal an outline nuclear deal with Iran but his negotiating team remained behind, a Western diplomat said.
"His deputy is staying," the diplomat told reporters as the tough negotiations were going down the wire to a midnight deadline.
Earlier, a senior US official said that the talks could drag into tomorrow, while an Iranian negotiator said his team was ready to keep talking "as long as necessary.