(FILES) In this file photo taken on January 31, 2020 the EU flag flies next to Gibraltar's flag (C) and the Union Jack (R) in Gibraltar. Spain has reached a deal with Britain to preserve freedom of movement across its border with Gibraltar just hours before the Brexit deadline expired, its top diplomat said on December 31, 2020. (Photo by JORGE GUERRERO / AFP) (Photo by JORGE GUERRERO/AFP via Getty Images)
LONDON, July 20 (Reuters) – Britain told the European Union to “think again” after the bloc published a plan for post-Brexit negotiations over the future of Gibraltar that London said seeks to undermine British sovereignty over the territory.
