washington diplomatic crisis unite state turkey lead stop issue visa citizens overblown likely resolve soon turkish deputy prime minister mehmet simsek say wednesday remark apparently aim defuse tensions two countries simsek tell event washington turkey consider safety security u.s. diplomats employees turkey top priority describe detention staff u.s. missions turkey routine investigations tensions two nato ally rise recent days detentions two locally employ staff prompt unite state sunday suspend non-immigrant visa service embassy consulates turkey hours late turkey issue similar suspension visa u.s. citizens u.s.-turkish relations already strain u.s. military support kurdish fighters syria unite state unwillingness extradite muslim cleric fethullah gulen former erdogan ally ankara view mastermind behind last year fail military coup want dispute last second simsek say current visa spat brief u.s. business opportunities turkey u.s. chamber commerce wednesday add turkey commit safeguard u.s. government employees turkey simsek remark contrast turkish president tayyip erdogan statements tuesday agents infiltrate u.s. missions turkey ankara long recognize u.s. ambassador john bass legitimate envoy bass tell reporters wednesday u.s. government still receive official explanation turkish government employees arrest turkey year u.s. drug enforcement administration worker detain istanbul last week erdogan spokesman say employee contact lead suspect last july fail coup since abortive putsch least 240 people kill 50,000 people detain 150,000 include teachers academics soldier journalists suspend work simsek wednesday dismiss concern express western ally crackdown show turkey slip authoritarian rule erdogan turkey arbitrary arrest political hostages give us benefit doubt turkey judicial system work function say turkey expect visa spat u.s. resolve soon deputy pm