I've been detained for a while and didn't read all the posts in this thread so I'm sorry if some of this has been discussed.
Trump pulled out 1000 troops. Special ops guys. WTF were 1000 troops going to do to stop Turkey from coming across the border?
Trump had been in contact with Turkey and couldn't convince them to not attack. He obviously didn't negotiate a good deal here.
So Trump had 2 options after the negotiations failed. Pull out or reinforce.
Remember our main objective to defeat ISIS in Syria has been accomplished and this move by Turkey won't IMO, let ISIS back in.
A little recent history:
On 24 August 2016, the Turkish armed forces, supported by the U.S., began a declared direct military intervention into Syria. On 24 August 2016, after 2 days of artillery bombardment and airstrikes, the Turkish Land Forces launched an attack on the ISIL-held town of Jarabulus, followed by hundreds of FSA fighters.
For the incursion of Turkey's military into Syria that began in August 2016, see Operation Euphrates Shield. For the incursion of Turkey's military into Syria that began in January 23 2009 2018, see Operation Olive Branch. For the incursion of Turkey's military into north-eastern Syria that began in October 2019, see 2019 Turkish offensive into north-eastern Syria. For the occupation of north-western Syria by Turkey since 2016, see Turkish occupation of northern Syria
So Trump had 2 options after the negotiations failed. Pull out or reinforce.
I prefer the pull out option. Maybe I'm a little biased here because in Nov of 2016 my son was on his way to Syria but was called back.
Just my 2 cents.
And Trump ran on bringing the military home....a campaign promise that the Democrats loved. Until now.