The Latest: Moscow: Russia, US, Turkish, Saudi foreign ministers to meet Friday about Syria

FILE - In this Wednesday, May 6, 2015, file photo released by the Syrian official news agency SANA, Syrian President Bashar Assad speaks during a public appearance at a school in Damascus, Syria. Russia’s military intervention in Syria has increasingly bolstered the sense that Bashar Assad may survive the war, and his surprise visit to Moscow, the first time he’s left the war-torn country in nearly five years, underscores how emboldened the leader has become. The visit is a brazen show of force by the two allies and a slap in the face of a fumbling U.S. administration whose response on Syria over the past years has been inconsistent and chaotic. (SANA via AP, File) (The Associated Press)

FILE - In this Wednesday, May 6, 2015, file photo released by the Syrian official news agency SANA, Syrian President Bashar Assad, center, waves to students during a public appearance at a school in Damascus, Syria. Russia’s military intervention in Syria has increasingly bolstered the sense that Bashar Assad may survive the war, and his surprise visit to Moscow, the first time he’s left the war-torn country in nearly five years, underscores how emboldened the leader has become. The visit is a brazen show of force by the two allies and a slap in the face of a fumbling U.S. administration whose response on Syria over the past years has been inconsistent and chaotic. (SANA via AP, File) (The Associated Press)