There are plenty of nations I feel my nation has friendships with - if they were bullied, we'd stand up for them on pure reaction.
Not everything is interests. People are people.
Interesting that you didn't feel the need to say what your "nation" is, or their nation BFFs. It would have allowed us to dig into real data, but no, let's just use feelz instead :)
People are people, and nation states are nation states. These are different entities.
You can of course be needlessly reductive and say that friendship is just two temporarily, mutually aligned self-interested parties, but… yeah. That’s pretty verbose. And not even correct.