illuminated in black, yellow and red in the colours of the Belgian flag, Brandenburg gate. 黑色, 黃色和紅色比利時國旗顏色的照明 勃蘭登堡門

People stand in front of the Brandenburg gate, which is illuminated in black, yellow and red in the colours of the Belgian flag in tribute to victims of Tuesday's attacks in Brussels, in Berlin, Germany, March 22, 2016. (REUTERS/Fabrizio Bensch)
The world reacts to Brussels attacks
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