"We are still assessing how to apply sanctions to achieve our ultimate goal," Pompeo said during a Senate Foreign Relations Committee hearing session, responding to questions from Senator Bob Menendez, the commission's top Democrat.
The members of the U.S. House of Representatives, both Republicans and Democrats, have submitted a bill to impose sanctions on Turkey for its purchase of the Russian S-400 missile system.
Also, weeks ago, American projects activated the Turkish file and the F-35 stealth aircraft which has been absent from interest in recent months, seeking to expel Ankara from its last connection to this most expensive aircraft in the world.
In a letter to the U.S. Secretary of Defense, Mark Esper, he demanded both Democratic and Republican members to accelerate Turkey's exit from the aircraft manufacturing program, some of whom cost $ 100 million.
The administration of the U.S. President previously responded to the calls of members of the government, and has already begun to punish Turkey, according to "America's Adversaries" Law, which aims to punish countries that buy equipment from Russia.