Syrian people should decide Assad’s fate, Tillerson tells US media 

"Rex Tillerson has said the Syrian crisis can only be solved through a political process, claiming it's not regime change but the defeat of the Islamic State (IS, formerly ISIS/ISIL) terrorist group that Washington is seeking in Syria.
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"Our strategy in Syria, our priority is first to defeat ISIS," the US official said in an interview with ABC's "This Week" host, George Stephanopoulos, which was aired Sunday. ...."

https://www.rt.com/usa/384142-tillerson-syria-regime-change-isis/