Trump: Russia, Syria, Turkey and Iraq helped raid

Turkey, the Syrian Kurds and Iraq have all claimed knowledge of the operation, but it seems there may have been other players too.

Trump said Russia, Syria, Turkey and Iraq all assisted in preparations for the raid, which required flying over an hour by helicopter in both directions from an undisclosed base.

The US forces "executed a dangerous and daring nighttime raid in northwestern Syria and accomplished their mission in grand style", Trump said, adding that a US dog was wounded.

“The canine, a beautiful dog, a talented dog, was injured and brought back,” he said.