brussels u.s. vice president mike pence assure european union brussels monday trump administration develop cooperation trade security back eu partner right month donald trump cause alarm renew endorsement brexit suggest others may follow britain eu pence tell reporters come home european union message president speak strong commitment ... continue cooperation partnership european union pence add whatever differences two continents share heritage value purpose promote peace prosperity freedom democracy rule law late meet nato across town make clear u.s. support transatlantic defense alliance price though trump say expect real progress european governments end year increase spend military budget close nato target percent gdp donald tusk chair european council eu leaders tell reporters pence give affirmative answer three question trump support current system international law nato idea unite europe report death west greatly exaggerate tusk say nod american writer mark twain eu officials say encourage call pence clear assurances include u.s. back hold european union together brexit though watch closely see far trump action match deputy word get everything look one official say pence note build common european institutions world war two say union cooperation unite state history attest unite state europe peaceful prosperous advance peace prosperity world echo comment make weekend germany pence also address worry europe trump suggestion nato defense pact obsolete washington say commit defend sovereignty territory european state hold russia account action ukraine pence also repeat trump belief common grind could establish russia years confrontation tusk former polish premier jail 1980s oppose soviet control seize pence personal memories youthful visit divide berlin remind new administration value europeans attach cold war support early republican president ronald reagan europeans concern trump may prefer bilateral tie european power rather work union pence speak cooperation include islamist violence safety security union people depend increase collaboration global fight terrorism eu officials say pence former governor indiana seem confident new role one say seek assure trump american direct style take hostile reflect push isolate unite state eu welcome pence assurance trump 's support