Russia and South Korea are two countries that are very far apart from each other. They are on opposite sides of the world! Despite this distance, these two countries have a relationship with each other that is very important.
Think of it like this: imagine you have a friend who lives very far away from you. Maybe they live in a different state or even in a different country! Even though you can't see each other all the time, you still talk to each other on the phone, send each other letters or emails, and maybe even visit each other sometimes.
That's kind of like what Russia and South Korea do! They have friendly relationships with each other even though they are far apart.
One thing that's very important to know about Russia and South Korea is that they do a lot of trade with each other. "Trade" means they buy and sell things from each other. For example, South Korea might buy oil or natural gas from Russia, and Russia might buy electronic equipment or cars from South Korea.
Another thing to know is that, like any friends, Russia and South Korea don't always agree on everything. Sometimes they have different opinions on things that are happening in the world. But even when they don't agree, they still try to talk to each other and work things out peacefully.
Overall, Russia and South Korea may be far apart, but they have a special relationship with each other based on trade and diplomacy.