caracas members venezuela government opposition coalition fail reach deal new round talk dominican republic saturday aim resolve opec nation protract political crisis plan meet two weeks try various mediation efforts fail recent years foes accuse president nicolas maduro exploit dialogue buy time say opposition prefer violence venezuelans expect talk yield breakthrough maduro foes demoralize see consolidate power ahead likely re-election campaign 2018. disparate democratic unity coalition fail dislodge maduro months street protest early year succumb infighting press primarily guarantee free fair vote next year also want foreign humanitarian aid corridor alleviate one bad economic crises modern history well freedom several hundred jail activists respect opposition-led congress process difficult heavy hard full debate confrontation say julio borges president opposition-led congress add hop two side could come close dec. 15. government opposition compromise key point accord one participant talk ask remain anonymous authorize speak media opposition bargain power weaken surprise defeat october gubernatorial elections furthermore multi-party group divide militant sectors oppose talk say simply buy government time however debilitate u.s. sanction maduro government give administration impetus talk maduro want potential deal opposition include joint pressure washington back say true aid come put end attack venezuela economy say information minister government negotiator jorge rodriguez strike positive tone borges say side deeply satisfy two-day talk indication u.s. president donald trump would prepare ease pressure maduro call bad leader dream become dictator u.s. officials say washington could strengthen sanction unless maduro enact democratic change foreign minister chile mexico bolivia nicaragua host dominican republic act guarantors talk hold foreign ministry build santo domingo venezuela political talk end without deal new meet plan dec. 15