British Prime Minister Theresa May, trying on Friday to reassure business and reset the tone of stalled exit negotiations with the European Union, set out a plan to retain full access to the EU¡¯s single market for two years after Brexit.

But her proposals for such a transition, for meeting Britain¡¯s financial obligations and for protecting EU citizens¡¯ rights fell short of what the EU wanted.

EU Brexit negotiator Michel Barnier praised the speech for its ¡°constructive spirit¡± but asked for more detail. Another official said it had left him ¡°even more concerned.¡±