Austrian Chancellor Sebastian Kurz holds his a face mask behind plexiglass shields before a media conference as they commemorate the terror attack one week ago, at the federal chancellery in Vienna, Austria, Monday, Nov. 9, 2020. Several shots were fired shortly after 8 p.m. local time on Monday, Nov. 2, in a lively street in the city centre of Vienna. (AP Photo/Ronald Zak)President of the European Council Charles Michel with Austrian Chancellor Sebastian Kurz, right, walk past tributes to those killed, as they commemorate the terror attack one week ago in Vienna, Austria, Monday, Nov. 9, 2020. Several shots were fired shortly after 8 p.m. local time on Monday, Nov. 2, in a lively street in the city center of Vienna. (AP Photo/Ronald Zak)Austrian Chancellor Sebastian Kurz, left, and President of the European Council Charles Michel, wear face masks behind plexiglass shields before a media conference as they commemorate the terror attack one week ago, at the federal chancellery in Vienna, Austria, Monday, Nov. 9, 2020. Several shots were fired shortly after 8 p.m. local time on Monday, Nov. 2, in a lively street in the city centre of Vienna.(AP Photo/Ronald Zak)
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Austrian Chancellor Sebastian Kurz holds his a face mask behind plexiglass shields before a media conference as they commemorate the terror attack one week ago, at the federal chancellery in Vienna, Austria, Monday, Nov. 9, 2020. Several shots were fired shortly after 8 p.m. local time on Monday, Nov. 2, in a lively street in the city centre of Vienna. (AP Photo/Ronald Zak)