Belgians gathered in Brussels Wednesday to place mementos, signs and flowers at a makeshift memorial in honor of the victims of the March 21 terror attacks.
Belgians Mourn Terror Attack Victims

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Belgian King Philippe and Queen Mathilde attend a commemoration ceremony at the Belgian parliament for victims of Tuesday's bombing attacks in Brussels, Belgium, March 24, 2016.

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As night falls in Brussels, Belgium crews arrive to assess and clear the damage to the Maelbeek metro station, one of two targets in the Tuesday attack that killed 31 people and injured 300, many of whom remain in intensive care, March 24, 2016. (H. Murdo