Aircraft at the Syrian Shayrat Air Base are seen in this still image taken from undated handout video.

Aircraft at the Syrian Shayrat Air Base are seen in this still image taken from undated handout video.

Aircraft at the Syrian Shayrat Air Base are seen in this still image taken from undated handout video. Photo: Russian Defense Ministry handout via Reuters

April 9, 2017 4:25 PM (UTC+8)