Most people would answer it is “family.” If a member of your family is in serious problem, you will save the member at any cost. If you find somebody is fell down on a street, what do you do? Do you save the person, or ignore the person as you are busy?
Human rights to life should be top priority for international matters
If the person who fell is a member of your family, what do you expect the person who found your family member? We believe human right to live must come first and save those in trouble regardless of any personal reasons. World peace is essential for respecting human rights.
However, world peace is difficult to achieve due to the politics based on “my country first” policies. If one country achieves their desire, the leader becomes hero of the country and would be dictator, as Hitler and others, but the scarified country would fight back sooner or later, and a war starts.