How about if I don't pick sides?

   While I spend the precious little time that I have left being love to my brothers and sisters, it has me asking this question. Who is my brother and sister? Watching recent events in Ukraine and how many people in this country have become quite emotional about the plight of their citizens, it brought that question home to me in a new way that I hadn't really dealt with. Should I truly love the citizens of one country over another, and if so, why?
   How is a brother or sister determined: If I like them? If I like the leader of their country? If they believe as I do? If I am told they are the good guys or not? If their country is friends with my country? As long as we or a friendly country aren't at war against them? 
   Help me out here. Who do you say is a brother or sister and how do you determine?