US and EU negotiators launched their 14th round of talks on a mammoth and controversial free trade deal in Brussels on Monday, amid persistent doubts over whether the agreement can be wrapped up by the end of the year as planned, according to dpa. Once finalized, the Transatlantic Trade and Investment Partnership (TTIP) would create the world's largest free trade area, with around 800 million people. Negotiations began three years ago. The week-long talks - the third round this year - will involve around 80 to 100 negotiators from each side of the Atlantic.