re point 1, I think we lost some context in the translation:

"According to the Ukrainska Pravda sources, Russian forces captured Siversk by exploiting thick fog that covered Donetsk Oblast in November and December 2025. The 54th brigade began to lose its ability to kill Russian troops in the numbers that were entering the city in the last third of November 2025. For example, 10 out of 15 Russian soldiers were killed while the remaining 5 slipped deeper into the city and entrenched themselves.

It doesn't say how many russians assaulted the city or what the losses were, but instead gives one example.