According to him, “all options are considered in terms of how to respond” to the deal between Turkey and Russia.

“All this is based on (specific. - RT ) conditions, and not on a calendar. There is no schedule established by (American. - RT ) legislation regarding sanctions, ”Cooper quotes TASS.

“But, of course, all options for action are being considered in terms of how to respond (to Turkey’s acquisition of the S-400 from Russia - TASS comment),” the diplomat emphasized.

Earlier, Turkish President Recep Tayyip Erdogan noted that the choice of Ankara S-400 is due to purely commercial interests.

Members of the US House of Representatives Foreign Affairs Committee urged U.S. leader Donald Trump to impose sanctions on Turkey over the acquisition of Russian S-400 systems.