The department has instructed that new official documents refer to Turkiye instead of Turkey, although the pronunciation will not change, officials said. But neither the State Department website nor the Foreign Affairs Manual, which guides US diplomatic practices, had been revised to reflect the change as of midday Thursday.

The move comes ahead of an expected visit to Washington later this month by Turkish Foreign Minister Mevlut Cavusoglu during which Turkey’s position on Russia’s invasion of Ukraine and its resistance to allowing Finland and Sweden to join NATO will be high on the agenda.

Several other US federal agencies, including the Treasury Department, had already adopted the new spelling, which had led to inconsistencies in documents across the government.

The change was revealed as the State Department released a statement in support of a Treasury move to sanction several Turkey-related businessmen and companies for supporting the ISIS. It was later confirmed by two department officials.

Turkey asked last year for its name to be changed to Turkiye in international forums and most, including the United Nations and NATO, had switched to the new spelling.

The State Department, however, does not often change its style on the names of foreign countries and, in at least one notable case, has refused to do so for decades.

The US still refuses to refer to Burma as Myanmar although the country’s military rulers formally adopted Myanmar in 1989.

The last two countries that the State Department renamed following requests by their governments were North Macedonia, which changed its name from Macedonia in 2019, and Eswatini, which changed its name from Swaziland a year earlier.