One of the things that surprised me the most was the amount of countries that built/ were building walls, "a third of the world's countries have completed or are building barriers – compared to 16 at the fall of the Berlin Wall". I had no knowledge of this fact, apart from the one diving Israel and Palestina. Another surprising fact was the analysis made, that "a structure so simple as a wall or fence can have profound psychological effects" and that ""They (the walls) are mostly effective against the poorest and most desperate" and 'well-funded drug cartels and terrorist groups are not affected by walls at all because they have the resources to enter by safer methods, most likely using fake documents'. I found all of that to be true, after giving it a thought.
Whereas I am not so sure about the solution to this situation, whether it lies in politics, an international treaty, or social management, it is worth to stop and consider the opinion of Emmanuel Brunet-Jailly, from Canada's University of Victoria. He says that real border control comes only through the slow, exhaustive work of building ties and sharing information with other countries, but it's a lot more difficult for people to accept that diplomatic cooperation and sharing databases are much more effective in the long term.'
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