An anti-Brexit campaigner holds a placard as EU flags flutter during a protest near the Houses of Parliament in London on March 13, 2019. Image Credit: AFP

European Union leader Donald Tusk said Thursday that European capitals could approve a long delay to Brexit, in a last-ditch push to persuade Prime Minister Theresa May to change her negotiating red lines.

During consultations ahead of next week's EU summit, Tusk said he "will appeal to the EU27 to be open to a long extension if the UK finds it necessary to rethink its Brexit strategy and build consensus around it."