President Donald Trump says he's just authorized the doubling of steel and aluminum tariffs "with respect to Turkey."

Trump says via tweet that the tariff on aluminum imports will be increased to 20% and the tariff on steel imports will be raised to 50% as the Turkish Lira "slides rapidly downward against our very strong Dollar!"

Trump is also declaring that, "Our relations with Turkey are not good at this time!"

The United States slapped sanctions on two Turkish officials earlier this month over a detained American pastor who is being tried on espionage and terror-related charges.

Turkey vowed retaliation "without delay" and warned the move would further harm relations between the two allies.

Trump's tweet caused a further drop in the Turkish currency, which is now down 13% on the day.

After $34 billion in tariffs against China went into effect earlier this month, China responded with its own equivalent tariffs soon after, targeting U.S. agricultural products including soy, corn, wheat, pork, poultry and more. 

(The Associated Press contributed to this report.)