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This article from The Economist puts the finger on the painful question of the "economic cost" of hosting refugees.
Read the article and comment on the European experiences in this respect in your journal.
You can also comment on what others have done in their own journals!
The Syrian refugee crisis and European benefits
In brief, Europe stands to gain considerable economic advantages from the influx of Syrian refugees. Most of the Syrians are of a relatively young age, and come from a country where they have had, as a minimum, a good basic education. They will enter a work force (EU-aggregated) that is beleaguered with a net loss of its prime capital: human resources. The Economist article presents the issue rather well.
I think the main issue for EU countries harbouring Syrian refugees shall not be economic, but social. However, socio-economic burdens shall generally more apparent in the first few years, and will gradually turn into the benefits that politicians like Merckel, as well as economic analysts, envision.