"All our steps taken so far are reversible if other parties to the deal fulfill their commitments," an Iranian diplomat told Reuters before the extraordinary meeting was due to start.
Friday's meeting in Vienna between the remaining signatories of the nuclear deal was the "last chance" to save the accord, Iranian officials claimed.
The world knows the late Holocaust syrvivor for his tireless work to bring Nazi criminals to justice. Few remember that before the war, he was trained as an architect.
The exhibit, which has been running since May 7, includes portraits by German-Italian photographer Luigi Toscano. It has been defaced three times with swastikas and cut with knives.
Holes were cut into the portraits of the survivors taken by German-Italian photographer and filmmaker Luigi Toscano.
A project commemorating those who were persecuted by the Nazis in World war II was defaced with Nazi symbols in Vienna.
Vienna still remains a center of European culture, with more than 100 art museums, which combined, attract more than eight million visitors annually.
From the magical realm of Dvorak to the real world of Bruegel.