EU-US free trade talks restart in Brussels

For over a century in the developed world, the concept of free trade was based on the principle of no tariffs.

But in 2013 the economic map has changed. Although many countries still impose tariffs or duties on products entering their markets from foreign countries, it is "behind the border barriers" which are the real drag on trade flows.

EU and US officials will hold the second round of talks on the so-called Transatlantic Trade and Investment Partnership (TTIP) - set to last al...