Trump says 'not fair' that U.S. can't sell F-35s to Turkey
By Jeff Mason & Phil Stewart
Washington wants to sanction Turkey over its Russian arms deal — but it could backfire
By Natasha Turak
Lawmakers say Trump is locked into Turkey sanctions
By Joe Gould & Aaron Mehta
Trump says U.S. will cancel Turkey's purchase of F-35 planes
By Karoun Demirjian, Kareem Fahim & Karen DeYoung
Trump blames Obama as he reluctantly bans F-35 sales to Turkey
By Nicole Gaouette & Kevin Liptak