17 April 2012 Updated at 05:50 ET
YPF Repsol: Spain warns Argentina of strong response
Demonstrators in Buenos Aires backed the nationalisation of YPF on Monday
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The Spanish government has warned it will defend its interests as a row with Argentina over the nationalisation of oil company YPF intensifies.
link-
http://www.bbc.co.uk/news/world-europe-17739204