Two US defense officials say that Russia has conducted "several" airstrikes in support of the Turkish military fighting in Al Bab, Syria.
The Turks are fighting to expel ISIS from al Bab and they are in the midst of an extremely tough fight and they are taking casualties. The U.S. has repeatedly offered help over the past few weeks, both officials said, but the Turks continue to turn it down.
The U.S. has not been conducting airstrikes to support the Turks there.
The American military did conduct a show of force over al Bab recently, but they just flew several jets over the city, they didn't strike anything.
U.S. military officials are baffled at the Turkish refusal of air support. When asked whether the Russians have been striking ISIS in al Bab, one official said, "for now they are."