Turkey's missile purchase from Russia is a 'done deal'

Turkey's purchase of Russian S-400 missile defence systems, which has raised tensions with Washington, is a "done deal" and cannot be cancelled, Foreign Minister Mevlut Cavusoglu said on Thursday.

Speaking at a news conference on the sidelines of a visit to the United States, Cavusoglu also said Turkey's relations with Russia were not an alternative to its alliances with NATO or the European Union.