ankara unite state still seek explanation ankara detention staff u.s. missions turkey lead washington stop issue visa trigger diplomatic crisis u.s. ambassador say wednesday ambassador john bass say decision suspend grant visa take lightly detentions indicate breakdown communication two nato ally whose relations come increase strain unfortunately ... u.s. government still receive official communications turkish government reason local employees detain arrest tell reporters u.s. embassy ankara washington say two locally employ staff arrest turkey year may translator consulate southern province adana arrest last week drug enforcement administration worker detain istanbul president tayyip erdogan spokesman say last week istanbul employee metin topuz contact lead suspect last year fail military coup turkish media report similar accusations translator notion people employment face suspicion terrorism charge serious allegation bass say one want take seriously want good understand ostensible evidence support allegations since fail military coup july last year least 240 people kill 50,000 people detain 150,000 include teachers academics soldier journalists suspend work western ally fear crackdown show country slip ever deep authoritarian rule erdogan ankara say critics fail understand scale security challenge turkey also face conflict southern border iraq syria insurgency mainly kurdish southeast erdogan blame bass late dispute suggest act unilaterally suspend visa service declare government long consider bass washington envoy would hold meet u.s. state department deny bass act alone say action coordinate officials washington sign ankara step back pledge exclude bass turkish television channel report meet foreign ministry official late wednesday ambassador due leave turkey within days take post afghanistan u.s.-turkish tensions rise recent months u.s. military support kurdish ypg fighters syria consider ankara extension ban pkk wag insurgency three decades southeast turkey turkey also press far vain unite state extradite muslim cleric fethullah gulen former ally erdogan view ankara mastermind behind fail coup another source friction u.s. indictment turkey former economy minister zafer caglayan conspire violate u.s. sanction iran u.s. court also indict 15 erdogan guard clash protesters visit washington may addition two detain consulate workers turkey hold u.s. pastor charge turkish media say include membership gulen network bass call release christian missionary andrew brunson say see nothing merit charge deny report turkish police try speak another consulate employee best knowledge outstanding request turkish law enforcement officials local staff come talk say u.s. still seek explanation arrest staff turkey ambassador