One US official said it is well known that some senior US military officials are livid at how the Kurds have been treated given their role in helping the US fight ISIS.

Another senior American defense official told CNN that Trump’s failure to more forcefully oppose the invasion or do anything to stop the attacks on the Kurds meant Trump had given Turkey a green light, despite the administration’s public stance that it had consistently opposed the operation…

“How do we expect anyone to partner with us now?” one US defense official told CNN.

“They did everything we asked them to do,” said another. “This is really not good for us.”