Indeed, as conventional trade barriers, such as tariffs and import quotas, have come down over the past half-century, others, such as discriminatory regulations, have sprung up to take their place.

ECONOMIST: A survey of world trade

They are usually about explicitly protectionist measures, such as import tariffs or quotas, that keep out foreign goods at the border.

ECONOMIST: At daggers drawn

It would be best to broaden the new round to areas such as industrial tariffs, investment and competition policy, to allow more scope for the trade-offs on which a final deal depends.

ECONOMIST: Storm over globalisation