A still from a video shows Russian solders firing a large self-propelled gun, causing a large explosion.
Russian soldiers fire a Giatsint-S self-propelled gun toward Ukrainian positions in the Kursk region of Russia.
  • Videos appear to show Russian soldiers surrendering to Ukrainian troops taking Russian territory.
  • An expert said the footage suggests the soldiers are not combat-experienced.
  • Ukraine is advancing in Russia's Kursk region.

Videos that appear to show Russian forces surrendering to Ukrainian troops on Russian soil suggest that those soldiers are desperate and inexperienced, warfare experts said.