Stranac u Srbiji

This is the register of the evening news: long sentences, stacked genitives, titles inside titles. It is also where most advanced learners quietly stall, because the vocabulary is transparent while the grammar is not.

Nearly every gap here is a case decision, and three patterns cover almost all of them:

Pattern	Example from the text	Why
noun + noun	ministar inostranih poslova	the second noun goes to the genitive — minister of affairs
u + location	u penziji, ne „u penziju“	locative for where he is, accusative only for movement
adjective agreement	za jugoistočnu Evropu	the adjective copies the case of its noun, every time

One more worth noticing: povezanost sa Srbijom takes the instrumental, because sa here means with, not from. Serbian uses the same preposition for both and lets the case separate them — sa Srbijom is with Serbia, sa Srbije would be off Serbia.

And a small pleasure in the first question: Austrijanac, not Australijanac. Two letters, two continents.