L'Oreal and a growing number of European fashion and cosmetics companies are exploring use of an obscure, decades-old U.S. customs clause known as the "First Sale" rule as a potential way to soften the impact of U.

Discrepancies between the two sides' version of the deal have emerged, and key details of the agreement are yet to be negotiated.

EU Ambassador Jovita Neliupšienė discusses China, Russia, U.S. ties and the 'existential' issue of security with Newsweek.