- The U.S. is prepared to discuss with Russia joint efforts to stabilize war-torn Syria, U.S. Secretary of State Rex Tillerson said.
- That could include no-fly zones, he said.
"If our two countries work together to establish stability on the ground, it will lay a foundation for progress on the settlement of Syria's political future," Tillerson said in a statement ahead of this week's Group of 20 summit in Germany.
Russia is Assad's major ally and Moscow's military support has helped the Syrian government turn the tide in a multi-sided war against Islamic State and Syrian rebels.
Washington hit a Syrian air base with a missile strike in April after accusing the Assad government of killing dozens of civilians in a chemical attack.