[AnotherUnixGeek]

Mattis was Secretary of Defense for nearly two years - that's a lot longer than most last in that post, it's longer than Obama's last three Defense Secretaries. If Mattis opposes Trump's pullout from Syria, he should leave. Trump has always made it plain that he opposes US boots on the ground in countries we have no business being in, and it's never been clear to me why we are in Syria trying to help Al-Qaeda overthrow Assad.

[JimRed]

...it's never been clear to me why we are in Syria trying to help Al-Qaeda overthrow Assad.

Nor to me; Muslims killing Muslims is a good thing. it keeps them busy enough that fewer will be attacking US!