The so-called "soft targets" are now preferred by terrorists, since they are more difficult to predict
This particular spring has been a violent season for the British Lion
Attackers aim to generate a psychological impact. For that reason, giving them excessive coverage benefits them
Terrorism: Unstoppable nightmare?
There are certain factor in some European countries which contribute to the sentiment of disintegration in Arab immigrants
The Mexican Foreign Ministry also urged citizens to avoid areas in close proximity to the Syrian border.
Earlier, the government had reported 20 dead at the Maelbeek metro station, in the heart of the European Union's capital, and 11 dead at the airport, and scores of injured.
The president of Mexico regretted the tragic events and expressed his solidarity with the people of Belgium.
Both groups want to end Western influence in the Middle East and unite Muslims under a transnational caliphate governed by a harsh version of Islamic law. But they are bitterly divided over tactics.
Three sources told Reuters the raid stopped a jihadist cell that had been planning an attack on Paris's business district, La Defense.
About 100 people were killed in the Bataclan concert hall in central Paris and 40 others have died in other locations in and around Paris in a militant attack.