Foreign Secretary Raab is about to take one for the team.
U.S.A. has pulled out of Afghanistan, but some of their people / contractors are still in Syria.
The U.S.A. troop occupation of sovereign Syrian soil in the northeast has been well-known since the Obama administration,
yet the new U.S.A. President Joe Biden claimed in a Wednesday night ABC News interview with George Stephanopoulos that there is no U.S.A. military presence in Syria.
https://www.almasdarnews.com/article/biden-falsely-asserts-the-u-s-doesnt-have-a-military-presence-in-syria/
Unless Uncle Joe misspoke, he probably means the regular troops have been mostly removed but they still have CIA / contractors in four areas of Syria.
Jihadis of North West Syria / mostly Idleb province. Kurdish North West Syria / Rojava.
Down in the Golan / Daraa area
and at the triangle that covers Syria/Jordan/Iraq / al-Tanf
https://en.wikipedia.org/wiki/Al-Tanf_(U.S._military_base)
Plus others on special missions.