Stephen Evans
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EU and US free-trade talks explained

13 February 2013 Last updated at 16:48 GMT

The European Union and the US will begin formal talks on a free-trade agreement, paving the way for the biggest trade deal in history.

European Commission President Jose Manuel Barroso made the announcement following President Barack Obama's State of the Union address.

The BBC's Stephen Evans explains the difficulties of bringing down trade barriers between the two largest economies in the world.