ANKARA, Turkey — In what would be a snub to NATO, the Turkish government has said it may buy the Russian-made S-400 for its near-mystery program to build the country's first long-range air and anti-missile defense system.

Defence Minister Fikri Isik said Feb. 22 that talks between Turkey and Russia for the potential acquisition of the S-400 system "made quite [the] progress."

"The S-400 [system] looks like the closest option," Isik said. But the minister cautioned that "we are not at a stage of signing a deal tomorrow."

Isik said that Turkey's priority was to indigenously develop a system that would permanently protect Turkey against any attack.

ASTRAKHAN, RUSSIA - FEBRUARY 12: An S-400 missile is launched at the shooting range of Kapustin Yar near Astrakhan, 1,150 kms (720 miles) south of Moscow, 12 February. Russia's Air Force plans to introduce the S-400 as a new air-defense missile, which is currently under testing. (Photo credit should read STR/AFP/Getty Images)
ASTRAKHAN, RUSSIA - FEBRUARY 12: An S-400 missile is launched at the shooting range of Kapustin Yar near Astrakhan, 1,150 kms (720 miles) south of Moscow, 12 February. Russia's Air Force plans to introduce the S-400 as a new air-defense missile, which is currently under testing. (Photo credit should read STR/AFP/Getty Images)

An S-400 missile is launched at the shooting range of Kapustin Yar near Astrakhan, 720 miles south of Moscow.

Photo Credit: STR/AFP via Getty Images

Isik's statement came when the three-nation group that builds the Medium Extended Air Defense System, or MEADS, was offering Turkey what looks like a customized partnership to construct a long-range air defense architecture for the country. Turkey and the MEADS group have been in talks for a potential deal since April.

The United States, Germany and Italy developed the ground-mobile air and missile defense system intended to replace the Patriot missile system through a NATO program. They jointly spent $4 billion for the development of the system.

For its long-range air defense system, dubbed T-LORAMIDS, Turkey in September 2013 selected China Precision Machinery Import-Export Corporation's $3.44 billion solution, which defeated rival bids from Eurosam, maker of the SAMP/T; a consortium of Lockheed Martin and Raytheon, maker of the Patriot system; and the Russian-made S-300/S-400 option.

In its 2013 assessment, Turkey's procurement officials found the Russian offer "exorbitantly expensive." Under pressure from its NATO allies, Turkey later scrapped the preliminary deal with CPMIEC and the competition.

Since then Ankara has held talks with the Western contenders, but it also commissioned two domestic state-controlled companies, Aselsan and Roketsan, to locally develop the system.