Well we knew that, we also know they are there mostly training Ukrainian soldiers, and some might be tasked with embassy duty as most countries (unlike USA) don't protect their embassies with military presence. You're not going to find any NATO SoF near the front-lines.

I stand corrected. The presence of US troops in the Kyiv embassy was revealed last November, but the fact they are special forces is new.

They literally openly admitted it last November. You can say the special forces part is new but that isn't the point being made by most, which is about US troop boots on the ground, and the military never says which specific type of troops are there anyway for operational security reasons.

https://www.nbcnews.com/news/us-news/us-military-inspectors-...