Miro Cerar, Slovenia's prime minister, poses for a photograph following an interview in his office in Ljubljana, Slovenia, on Tuesday, Oct. 11, 2016. The red lines that Britain has signaled it will adopt in talks to leave the European Union are fully incompatible with membership in the bloc's single market and there won't be any negotiations until the U.K. triggers the process, Cerar said. Photographer: Akos Stiller/Bloomberg via Getty Images