Hey there!
Here is your answer:
The proper answer to this question is "the superiority of your own country and the belief that it should become and remain politically independent"!
Reason:
Nationalism is the patriotic feeling which gives people to report, and use the citizenship and obey the laws of their citizenship. So basically its they're duty as citizens to report fugitives.
Therefore the answer is the superiority of there government.
If you need anymore help feel free to ask me!
Hope this helps!
~Nonportrit