President Barack Obama and Russian President Vladimir Putin have agreed to keep up negotiations over a ceasefire agreement for Syria.
An official with the Obama administration said the president and Mr and Putin met for 90 minutes on Monday at the Group of 20 economic summit in Hangzhou, China.
Their discussion came hours after top US and Russian diplomats failed to seal a deal aimed at providing access to humanitarian aid for thousands of civilians in the war-torn country.
The plan would forge an unlikely US-Russian militarily partnership against extremist groups operating in Syria.
The official said Mr Obama and Mr Putin clarified remaining gaps in the talks, which largely involve how the deal would be implemented.