ankara president tayyip erdogan blame u.s. ambassador turkey tuesday diplomatic crisis two countries say ankara long consider washington envoy blunt personal attack outgo ambassador john bass erdogan suggest bass act unilaterally suspend visa service turkey arrest u.s. consulate worker say agents infiltrate u.s. missions u.s. state department defend bass say full back u.s. government action coordinate state department white house national security council ambassadors tend things unilaterally state department spokeswoman heather nauert tell brief close coordination cooperation ambassadors add say bass do terrific job turkey dispute plunge already fragile relations two nato ally new low months tension link conflict syria last year fail military coup turkey u.s. court case turkish officials u.s. embassy say sunday night suspend visa service assess turkey commitment safety missions staff message reiterate video release bass late monday ambassador ankara take decisions say name government strange erdogan say ambassador keep even minute embassy say allegations arrest employee link fethullah gulen u.s.-based muslim cleric blame ankara orchestrate fail coup erdogan last year baseless nauert say turkey arrest two local u.s. embassy staff members year summon third local staff member question weekend deeply disturb move target responsible law enforcement coordination countries say able close security cooperation especially nato partner incredibly important nauert say start arrest detain people people responsible law enforcement coordination ... major concern take step erdogan say arrest police request question second consulate employee show something cook u.s. consulate istanbul ... agents infiltrate u.s. consulate say bass due leave country within days take post afghanistan make farewell visit government offices minister parliament speaker accept accept request see representative unite state erdogan tell televise news conference visit belgrade prime minister binali yildirim say visa suspension punish citizens countries accuse washington take emotional inappropriate step ally make citizens pay price say call unite state reasonable issue must course resolve soon possible say describe u.s. behavior unbecoming ally speech ankara rule ak party parliamentarians yildirim also defend turkey decision retaliate visa suspension u.s. embassy announcement turkey tribal state retaliate do kind say turkey 's erdogan blame u.s. envoy diplomatic crisis