Turkish President Recep Tayyip Erdoğan mused that his government might later consider buying Russia’s S-500 Prometey (Prometheus) air defense systems at a later date, RIA Novosti reported.

Also, the Turkish leader noted that his government will not cancel the deal with Moscow to purchase the S-400 Triumf air defense systems, despite protests from its ally in Washington.

“This [deal] is over,” Erdoğan said on the air of 24 TV, noting the signatures had already been made on the deal and that the first delivery will be made in July.