Stier came to Croatia for the first time in 1990 at 28 as part of the Croatian Heritage Foundation program, and for the second time three weeks before the fall of Vukovar as a journalist for the Argentine newspaper El Cronista and Radio America.
U Hrvatsku Stier je prvi put došao 1990. godine u sklopu programa Hrvatske matice iseljenika, a drugi put dolazi tri tjedna prije pada Vukovara kao novinar argentinskog lista El Cronista i Radio America.