FILE PHOTO: U.S. President Donald Trump delivers a speech during Arab-Islamic-American Summit in Riyadh, Saudi Arabia May 21, 2017. REUTERS/Jonathan Ernst/File Photo

ANKARA (Reuters) - Turkish President Tayyip Erdogan and U.S. President Donald Trump discussed recent developments in Syria, bilateral ties and a summit in Russia’s Sochi during a phone call on Friday, sources in Erdogan’s office said.

At a summit in the southern Russian city of Sochi on Wednesday, Russia’s Vladimir Putin won the backing of Turkey and Iran to host a Syrian peace congress, taking the central role in a major diplomatic push to finally end a civil war all but won by Moscow’s ally, President Bashar al-Assad.

A written statement from Erdogan’s office will be released later on Friday, sources said.