On October 8, 2017, the United States Embassy of Turkey announced that it would suspend the processing of all nonimmigrant visas – the type of visa used by students, business travelers, tourists, and diplomats – while it analyzed Turkey’s commitment to the security of its staff. This came after a Turkish employee of the American Consulate in Istanbul named Metin Topuz was arrested by Turkish authorities over suspicions that he was linked with Fethullah Gulen, who Ankara accuses of orchestrating the failed 2016 putsch attempt. In response to the American suspension, the Turkish Foreign Ministry announced similar measures against the United States, including suspension of electronic visas and visas at the border – the way most tourists and other short-term visitors enter Turkey.
On November 6, tensions began to ease as Washington partially resumed issuing visas in Turkey. The crisis was fully resolved on December 28, when the US and Turkey resumed full visa services following assurances from Ankara that no other employees of American diplomatic missions in Turkey were under investigation and that local staffers wouldn’t be prevented from doing their jobs.