Complex sentence: Argentina states the principle of self-determination is not applicable since the current inhabitants are not aboriginal and were brought to replace the Argentine population that Argentina claims was expelled by an'act of force', forcing the Argentinian inhabitants to directly leave the occupied islands.
Split into simpler sentences: Argentina states the principle of self-determination is not applicable since the current inhabitants are not aboriginal and were brought to replace the Argentine population. Which was expelled by an'act of force', forcing the Argentinian inhabitants to directly leave the occupied islands.