Yes. It seems to be correct that it is a "black sun" symbol, but you would have to look very hard and zoom in to notice it. It is almost completely obscured by the image quality.

Side note: Newsweek seems to have an extremely obnoxious website behavior.

The image in the article is low res and blurry. This article makes it clear: https://www.opindia.com/2022/03/nato-shares-image-of-ukraini...

The neonazi and SS symbolism is pretty pervasive in their military, especially in the elite forces and former volunteer battalions. This particular photo got notoriety only because it was published on NATO's official Twitter feed, but there's plenty more on the social media. Here's another one from BBC: https://ichef.bbci.co.uk/news/1024/branded_portuguese/94BD/p...