Police officers stand guard outside the court where suspect in the November 13 Paris terrorist attacks Salah Abdeslam was expected to appear, in Brussels, Belgium, 24 March 2016
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Brussels attacks: Global security measures stepped up

Tuesday's attacks in Brussels have triggered security concerns across Europe and beyond.

BBC News looks at some of the security measures which have been introduced since the tragedy.

Video produced by Jilla Dastmalchi

  • 24 Mar 2016
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