Lockheed Martin F-35 Lightning II

Turkey may reconsider its decision to buy US-made F-35 fighter jets due to their technical problems and increase expense, according to sources in the Turkish military and Defence Ministry, cited by pro-government Yeni Safak newspaper on Thursday.

Britain's most advanced military aircraft, the Lightning F-35B, has flown its first missions over Syria and Iraq as part of ongoing operations against remnants of the Islamic State group, the U.K.'s defense secretary said.

Washington is looking at imposing financial sanctions on Turkish firms beyond those that build parts for the Lockheed Martin F-35 fighter jet, over Ankara's plans to buy a Russian air defense system, a top Pentagon official said on Monday.

Turkey has unveiled a life-sized mockup of its TF-X jet, a combat aircraft with several similarities to the American-built F-35 stealth fighter, the state-run Anadolou Agency reported on Monday.

Turkey has unveiled a life-sized mockup of its TF-X jet, a combat aircraft with several similarities to the American-built F-35 stealth fighter, the state-run Anadolou Agency reported on Monday.

The US Department of Defense has a "handshake" agreement with Lockheed Martin Co to cut 8.8 percent from the price of its latest order of F-35A fighter jet, shaving a year from the time frame in which each aircraft will cost less than $80 million, a Pentagon official said on Monday.

The US military has halted a program for training Turkish pilots on the F-35 fighter jets taking place in the United States, following a warning last week from the US State Department to Ankara, giving it until July 31 to scrap a contentious deal with Russia for the S-400 missile defense system, Foreign Policy magazine reported on Tuesday.

The United States on Friday raised the stakes in its standoff with Turkey over Ankara's deal to acquire a Russian air defense system, laying out a plan to remove the NATO ally from the F-35 fighter jet program that includes immediately halting any new training for Turkish pilots on the advanced aircraft.

"The U.S. said on June 6 it would halt new pilot training on the F-35 fighter jet program with Turkey.

The United States has decided to stop accepting any additional Turkish pilots who planned to come to the United States to train on F-35 fighter jets, US officials say, in a clear sign of the escalating dispute over Ankara's plans to purchase Russian air defenses.