london prime minister theresa may hail new sense optimism brexit talk tell parliament monday agreement move negotiations future trade tie progress reassure concern britain may leave deal may weaken lose conservatives majority june election rescue agreement last week move talk unravel 40 years union second phase ease concern northern irish ally future role border eu member ireland discussion britain trade relationship eu brexit contain many pitfalls could widen differences among top team minister cabinet britain look leave bloc statement parliament may take task doubt could move talk beyond initial stage agree term much britain pay citizens right border british province northern ireland eu member ireland good news people vote leave worry bogged tortuous negotiations never go happen tell parliament good news people vote remain worry go crash without deal may head brussels thursday summit meet expect leaders 27 eu state approve assessment negotiators side make sufficient progress move phase two warn government pay financial settlement britain eu secure future trade deal deal launch talk look jeopardy week ago may force abandon choreograph meet brussels intend seal deal ally northern ireland express fear propose special status region sync rest unite kingdom days diplomacy compromise overall brexit deal secure britain keep full alignment rule eu single market help cooperation ireland north south word reverberate london belfast brexit minister david davis say statement intent legally bind move monday davis tell lbc radio word take context deny back away commitment eu describe deal gentlemen clear understand fully back endorse uk government european commission chief spokesman margaritis schinas tell reporters brussels davis comment may aim members northern irish democratic unionist party prop may conservative minority government parliament party express concern alignment could work without britain stay eu single market customs union may want ease fear campaigners britain leave eu say possibility follow bloc rule would mean would brexit name may say commitments make first round talk include payment 35-39 billion pound many years meet eu obligations necessary sever tie bloc move build bold new economic security relationships underpin new deep special partnership want see say partnership european union sovereign unite kingdom take control border money laws may hail new optimism brexit talk deal