US sanctions against Turkey’s Justice Minister Abdulhamit Gul and Interior Minister Suleyman Soylu over the continued detention of American pastor Andrew Brunson have been met with fury and defiance in Ankara. President Recep Tayyip Erdogan’s government is vowing with new determination not cave to pressure from Washington and says commensurate sanctions against the United States are on the way.

The US Treasury Department accused the two ministers of “being responsible for the arrest and detention of pastor Andrew Brunson” as well as “implementing Turkey’s serious human rights abuses.” The Treasury decision follows the threats by President Donald Trump and Vice President Mike Pence of serious sanctions if Brunson is not released immediately and all charges against him dropped.

Turkey’s effort to relieve some of the pressure from Washington last week by transferring Brunson from his prison cell, where he has been since 2016, to house arrest in Izmir appears to have merely fed the anger in Washington.

Brunson is accused of complicity in the failed coup attempt against President Recep Tayyip Erdogan in 2016 that Ankara says was masterminded by Fethullah Gulen, the Turkish preacher residing in self-imposed exile in the United States. Turkey has failed so far to have Gulen extradited. Washington has refused to do so on the grounds of insufficient evidence and concerns that Gulen would not get a fair trial in Turkey.