US Defense Department or Radio Hezbollah?

I am totally unsure that I understand where US international politics is going. If CNN is to be believed (and no MSM source is to be believed these days), the shameful act of withdrawal from Syria occurred just so:

Erdogan was explaining all the problems with the US presence in Iraq and Syria and was irritating Trump, according to a senior administration official who received a detailed readout of the phone call between both presidents.
"OK, it's all yours. We are done," Trump said, according to the source.

Kurds, who played a major role in the defeat of Daesh, sacrificing thousands lives in the process, are left to the predictable fate in the hands of the Turkish dictator. That because Trump was irritated?

And there is another, relatively new quirk in the US mandarins' behavior. After each Israeli strike in Syria (real or imagined), some "anonymous sources in the US Defense Department" sees it as her/his/... duty to produce a statement of this kind:

US Defense Department official claims alleged Israeli attack occurred shortly after several senior Hezbollah officials boarded a plane bound for Tehran, according to a report by Newsweek.

Sources in the US Defense Department claim that several senior Hezbollah officials had been hit in an alleged Israeli airstrike near Damascus, according to a report Wednesday by Newsweek.

If there is an agreement between IDF and US Defense Department, engaging the "anonymous sources" there as our spokesperson?

Confused and discombobulated here...