It’s time for NATO to call Turkey’s bluff. President Recep Tayyip Erdogan said once again last week that his controversial plan to purchase a Russian missile-defense system is a “done deal” — even though the U.S. had warned that this could give Russia access to NATO’s air-defense secrets.
Amid an escalating war of words, this threat shouldn’t be minimized. Russia’s system, the S-400, could shoot down NATO fighter jets, and Moscow’s engineers are expected to help Turkey run it once the purchase is completed. That might give Russia insight into sensitive U.S. technology — especially that used by the F-35 stealth fighter, which Turkey is helping to build.