On Friday, August 10, 2018, U.S. President Donald Trump signed a proclamation, doubling the tariffs from 25% to 50% on steel imports from Turkey. The tariffs on Turkish steel are effective today, Monday, August 13, 2018, and are aimed at reducing imports to increase domestic capacity utilization.
Turkey has committed to retaliation, however, an official statement has not yet been released with the details.
Please see the full version of the Presidential Proclamation issued on August 10, 2018.