Source:
BBC
25 May 2012 Last updated at 10:57 GMT
EU refers Argentina's import restrictions to the WTO
The European Union has filed a suit against Argentina's import restrictions at the World Trade Organisation (WTO).
It is the latest step in the row between the two since Argentina nationalised energy company YPF, which was majority owned by Spain's Repsol.
EU officials highlighted difficulties with getting export licences as well as rules forcing some companies to import as much as they export.
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The case is not directly linked to the nationalisation of Repsol, but Mr De Gucht said: "The trade and investment climate in Argentina is clearly getting worse."
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Read more:
http://www.bbc.co.uk/news/business-18204213