Turkey was yesterday drawing up retaliatory measures after Washington slapped sanctions on two Turkish ministers in the one of the biggest crises between the two Nato allies in recent years.
Tensions have soared over Turkey's detention on terror charges of American pastor Andrew Brunson, who was first held in October 2016 and was moved to house arrest last week.
The sanctions targeting Justice Minister Abdulhamit Gul and Interior Minister Suleyman Soylu freeze any property or assets on US soil held by the two ministers, and bar US citizens from doing business with them.
White House spokeswoman Sarah Sanders told journalists both ministers had "played leading roles in the arrest and detention of Pastor Brunson", who led a Protestant church in the Aegean city of Izmir.
The Turkish foreign ministry warned that the move "will greatly damage constructive efforts" to solve outstanding issues and told Washington it would retaliate.
"Without delay, there will be a response to this aggressive attitude that will not serve any purpose," it said.
Hours before the sanctions were announced, President Recep Tayyip Erdogan accused Washington of showing an "evangelist, Zionist mentality".
The standoff appears to be one of the most serious crises between Turkey and the United States in modern history, along with the rows over the 1974 Turkish invasion of Cyprus and the 2003 US-led invasion of Iraq.
"A scandalous decision from Washington," said the headline in the pro-government Hurriyet daily. "A historic rupture," added the opposition Cumhuriyet.
In a rare show of unity by Turkey's parliament, two opposition parties joined Erdogan's ruling party and its main ally by agreeing a joint statement opposing the sanctions.
The row over Brunson escalated last week when US Vice President Mike Pence said Turkey would face "significant sanctions" if this "innocent man of faith" was not freed.
His language was immediately echoed by President Donald Trump, who had enjoyed a relatively warm.
The court trying Brunson has repeatedly refused to allow him to go free. The next hearing is October 12 with the pastor facing 35 years in jail if convicted.
He is accused of acting on behalf of two groups deemed by Turkey to be terrorist organisations -- the movement led by US-based Muslim preacher Fethullah Gulen who Ankara says was behind the 2016 coup bid and the outlawed Kurdistan Workers' Party (PKK).
The row over Brunson is just one of a number of disputes which have buried any hope of a warming of ties under the Trump presidency.
Ankara and Washington are at odds over American support for a Kurdish militia in Syria and the United States is extremely wary over Turkey's growing cooperation with Russia and its deal to buy Russian air defence systems.