President Recep Tayyip Erdoğan pledged to continue talks with Moscow for the procurement of the second batch of the Russian-made S-400 air defense systems and said they would discuss details at the end of the month.
He stressed that Turkey is determined to proceed with the S-400 deal despite U.S. opposition.
Turkey's president has criticized the United States for kicking his country out of the F-35 fighter jet program after Ankara purchased a Russian missile defense system, a move that also triggered US sanctions.
Speaking after Friday prayers in Istanbul, Turkish President Recep Tayyip Erdogan said Turkey paid "very serious money" for the F-35 stealth jets.
US president-elect has grown distant to the Turkish leader, but there are signs both sides will seek to work the relationship out
Six suspects, including employees of Turkey's Presidency of Defense Industries (SSB), were detained over corruption charges, judicial authorities announced on Jan. 12.
The detentions are part of a joint intelligence and police operation against a group involved in illegal actions in the defense sector, according to a statement by the prosecutor's office in the capital Ankara.
Turkey marked "Working Journalists' Day" on Jan 10, honoring the work and freedom of journalists.
"Working Journalists' Day" has been celebrated since 1961 on Jan. 10, after Law No. 212, which regulates the rights of journalists including the legal guarantees, was published in the Official Gazette, and the date became a milestone for journalism in the country.