US, Russia talks on Syria to go into Monday; no deal yet

U.S. President Barack Obama, left, and Secretary of State John Kerry, second left, meet with the delegation of Chinese President Xi Jinping on the sidelines of the G-20 summit at the West Lake State Guest House in Hangzhou, China, Saturday, Sept. 3, 2016. (How Hwee Young/Pool Photo via AP) (The Associated Press)

U.S. Secretary of State John Kerry speaks at a press conference in Hangzhou during the G20 Leaders Summit Sunday, Sept. 4, 2016. (Wang Zhao/Pool Photo via AP) (The Associated Press)

U.S. President Barack Obama smiles during the opening ceremony of the G20 Summit in Hangzhou in eastern China's Zhejiang province, Sunday, Sept. 4, 2016. (AP Photo/Mark Schiefelbein, Pool) (The Associated Press)

U.S. Secretary of State John Kerry says the United States will not rush into a deal with Russia to try to end Syria's civil war.

Kerry has been negotiating with Russian Foreign Minister Sergey Lavrov in China. They are discussing a ceasefire between Syria's government and moderate rebels, and a possible U.S.-Russian military partnership against extremist groups.

Kerry says they've worked out many technical issues but others are unresolved.

Kerry says he and Lavrov plan to meet again Monday. He says the U.S. will take the time needed to ensure the agreement has the best chance for success.

Several previous U.S.-Russia deals on Syria have failed to halt the violence.