He's adorable! What is his name? How did you find him?
I would describe your kitten as a blue domestic shorthair. Solid blue is a color that is frequently seen in domestic cats, and doesn't indicate specific breed ancestry. Most cats are not any particular breed, but this doesn't make them any less beautiful or special... Domestic shorthairs are great cats!
Yes, I agree.
Also, both these breeds have green or at very least, greenish eyes. AND a silvery shimmer to the fur, especielly russians, but korats too.
You know it's weird but in the second photo he looked like he has quite a bit of Russian Blue in him. Do you have any more photos of him? He's a gorgeous kitten, I am a sucker for the blue ones.