\'Out means out\' - Pro Brexit demonstrators rally outside UK Parliament

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Pro Brexit demonstrators rallied outside UK Parliament chanting ''Out means out," after Prime Minister Theresa May's Brexit deal was voted down by lawmakers for the third time, sounding its probable death knell and leaving Britain's withdrawal from the European Union in turmoil on the very day it was supposed to leave the bloc.

The decision to reject a stripped-down version of May's divorce deal has left it totally unclear how, when or even whether Britain will leave the EU, and plunges the three-year Brexit crisis to a deeper level of uncertainty.

After a special sitting of parliament, lawmakers voted 344-286 against May's 585-page EU Withdrawal Agreement, agreed after two years of tortuous negotiations with the bloc.