The guy here is attempting to say that the two countries are still going to be friendly based on the pure fact that the people within the countries are the Slavic "little brothers" of the Russians and even though a war was raged between the two nations it's going to be fine.

Personally, I don't think the Ukraine has many other countries that would support them if they were to be attacked by anyone else besides the Russians and they are like little brothers to the Russians along the lines of borrowing stuff from them.