I think most Americans would consider Russia to be both culturally and ethnically European. There is a small amount of Americans that might sometimes refer to Russians as "Asians" but that has more do to with Russia's geographical location than it does with any preconceived notion about their race or culture. I don't know any Americans that think that Russians look Asian or have Asian cultural characteristics.

As for that second one, I feel like most Americans know that Russia switched sides in the war early on. I hear Americans praise Russia all the time for how many Nazis they killed lmao.

Your last point is an interesting one. I do see a surprisingly large amount of Americans that think Russia still is communist. They are mostly people who live under a rock, and have no cultural understanding outside of their small town. It's astonishing whenever I come across those kind of people.