Should I send my kids to boarding schools in Europe?

I want to give my sons a great opportunity and send them to great boarding schools in Europe, including Russia. I want to send one of my sons to King Edward II School in Norway, and the other (if I get another one) to Russia for a military school. I already have a son, 6 years old. I live in the United States and I’m in the Navy. Please stay positive I just need advice, and no need to discuss about money, I just need some advice about if I should send them.